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69835109968 = 24131911978923
BaseRepresentation
bin100000100001001111…
…1110011011001010000
320200020221002011021101
41001002133303121100
52121010242004333
652025400434144
75021402432461
oct1010237633120
9220227064241
1069835109968
112768710a818
121164b778954
13677c2341a0
143546b72d68
151c3adde67d
hex10427f3650

69835109968 has 80 divisors (see below), whose sum is σ = 147236576256. Its totient is φ = 31896506880.

The previous prime is 69835109951. The next prime is 69835109977. The reversal of 69835109968 is 86990153896.

It is a happy number.

It is a super-2 number, since 2×698351099682 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7821955 + ... + 7830877.

Almost surely, 269835109968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69835109968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73618288128).

69835109968 is an abundant number, since it is smaller than the sum of its proper divisors (77401466288).

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

69835109968 is a wasteful number, since it uses less digits than its factorization.

69835109968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9332 (or 9326 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 64.

The spelling of 69835109968 in words is "sixty-nine billion, eight hundred thirty-five million, one hundred nine thousand, nine hundred sixty-eight".

Divisors: 1 2 4 8 13 16 26 52 104 191 197 208 382 394 764 788 1528 1576 2483 2561 3056 3152 4966 5122 8923 9932 10244 17846 19864 20488 35692 37627 39728 40976 71384 75254 115999 142768 150508 231998 301016 463996 489151 602032 927992 978302 1704293 1757831 1855984 1956604 3408586 3515662 3913208 6817172 7031324 7826416 13634344 14062648 22155809 22851803 27268688 28125296 44311618 45703606 88623236 91407212 177246472 182814424 335745721 354492944 365628848 671491442 1342982884 2685965768 4364694373 5371931536 8729388746 17458777492 34917554984 69835109968