15656101656 has 64 divisors (see below), whose sum is σ = 43983717120. Its totient is φ = 4607813760.

The previous prime is 15656101651. The next prime is 15656101663. The reversal of 15656101656 is 65610165651.

It is a super-2 number, since 2×15656101656² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15656101651) 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, 1083690 + ... + 1098041.

It is an arithmetic number, because the mean of its divisors is an integer number (687245580).

Almost surely, 2^15656101656 is an apocalyptic number.

It is an amenable number.

15656101656 is an abundant number, since it is smaller than the sum of its proper divisors (28327615464).

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

15656101656 is a wasteful number, since it uses less digits than its factorization.

15656101656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181776 (or 2181772 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 15656101656 in words is "fifteen billion, six hundred fifty-six million, one hundred one thousand, six hundred fifty-six".