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26064512012 = 22711673125743
BaseRepresentation
bin11000010001100100…
…001110010000001100
32111021110222101202202
4120101210032100030
5411340003341022
615550204541032
71611621460640
oct302144162014
974243871682
1026064512012
1110065812720
125074b51778
1325c4c40296
1413938c8c20
15a28398592
hex61190e40c

26064512012 has 48 divisors (see below), whose sum is σ = 56952978432. Its totient is φ = 10139834880.

The previous prime is 26064512011. The next prime is 26064512051. The reversal of 26064512012 is 21021546062.

It is a super-5 number, since 5×260645120125 (a number of 53 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (26064512011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144413 + ... + 270155.

It is an arithmetic number, because the mean of its divisors is an integer number (1186520384).

Almost surely, 226064512012 is an apocalyptic number.

26064512012 is a gapful number since it is divisible by the number (22) 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 26064512012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28476489216).

26064512012 is an abundant number, since it is smaller than the sum of its proper divisors (30888466420).

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

26064512012 is a wasteful number, since it uses less digits than its factorization.

26064512012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126438 (or 126436 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 26064512012 in words is "twenty-six billion, sixty-four million, five hundred twelve thousand, twelve".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 673 1346 2692 4711 7403 9422 14806 18844 29612 51821 103642 125743 207284 251486 502972 880201 1383173 1760402 2766346 3520804 5532692 9682211 19364422 38728844 84625039 169250078 338500156 592375273 930875429 1184750546 1861750858 2369501092 3723501716 6516128003 13032256006 26064512012