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10645307680 = 25579797987
BaseRepresentation
bin10011110101000001…
…01000000100100000
31000110220000122211211
421322200220010200
5133300144321210
64520153515504
7524541423310
oct117240500440
930426018754
1010645307680
114572aa9247
122091112b94
1310085ba737
1472db41440
1542487a38a
hex27a828120

10645307680 has 96 divisors (see below), whose sum is σ = 29038939776. Its totient is φ = 3612155904.

The previous prime is 10645307627. The next prime is 10645307731. The reversal of 10645307680 is 8670354601.

It is a happy number.

It is a super-2 number, since 2×106453076802 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59647 + ... + 157633.

It is an arithmetic number, because the mean of its divisors is an integer number (302488956).

Almost surely, 210645307680 is an apocalyptic number.

10645307680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10645307680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14519469888).

10645307680 is an abundant number, since it is smaller than the sum of its proper divisors (18393632096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10645307680 is an equidigital number, since it uses as much as digits as its factorization.

10645307680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98106 (or 98098 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 10645307680 in words is "ten billion, six hundred forty-five million, three hundred seven thousand, six hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 97 112 140 160 194 224 280 388 485 560 679 776 970 1120 1358 1552 1940 2716 3104 3395 3880 5432 6790 7760 10864 13580 15520 21728 27160 54320 97987 108640 195974 391948 489935 685909 783896 979870 1371818 1567792 1959740 2743636 3135584 3429545 3919480 5487272 6859090 7838960 9504739 10974544 13718180 15677920 19009478 21949088 27436360 38018956 47523695 54872720 66533173 76037912 95047390 109745440 133066346 152075824 190094780 266132692 304151648 332665865 380189560 532265384 665331730 760379120 1064530768 1330663460 1520758240 2129061536 2661326920 5322653840 10645307680