15655011556656 has 20 divisors (see below), whose sum is σ = 40442113188152. Its totient is φ = 5218337185536.

The previous prime is 15655011556607. The next prime is 15655011556661. The reversal of 15655011556656 is 65665511055651.

It is a junction number, because it is equal to n+sod(n) for n = 15655011556596 and 15655011556605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163073037001 + ... + 163073037096.

Almost surely, 2^{15655011556656} is an apocalyptic number.

15655011556656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15655011556656 is an abundant number, since it is smaller than the sum of its proper divisors (24787101631496).

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

15655011556656 is a wasteful number, since it uses less digits than its factorization.

15655011556656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326146074108 (or 326146074102 counting only the distinct ones).

The product of its (nonzero) digits is 20250000, while the sum is 57.

The spelling of 15655011556656 in words is "fifteen trillion, six hundred fifty-five billion, eleven million, five hundred fifty-six thousand, six hundred fifty-six".