15155651115656 has 16 divisors (see below), whose sum is σ = 28417943871900. Its totient is φ = 7577532749824.

The previous prime is 15155651115641. The next prime is 15155651115691. The reversal of 15155651115656 is 65651115655151.

It is a happy number.

15155651115656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10947958912900 + 4207692202756 = 3308770^2 + 2051266^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15155651115598 and 15155651115607.

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, 36380945 + ... + 36795168.

Almost surely, 2^{15155651115656} is an apocalyptic number.

It is an amenable number.

15155651115656 is a deficient number, since it is larger than the sum of its proper divisors (13262292756244).

15155651115656 is a wasteful number, since it uses less digits than its factorization.

15155651115656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73202008 (or 73202004 counting only the distinct ones).

The product of its digits is 3375000, while the sum is 53.

The spelling of 15155651115656 in words is "fifteen trillion, one hundred fifty-five billion, six hundred fifty-one million, one hundred fifteen thousand, six hundred fifty-six".