15155005656 has 128 divisors (see below), whose sum is σ = 44505331200. Its totient is φ = 4210375680.

The previous prime is 15155005643. The next prime is 15155005727. The reversal of 15155005656 is 65650055151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1649716 + ... + 1658876.

It is an arithmetic number, because the mean of its divisors is an integer number (347697900).

Almost surely, 2^15155005656 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 15155005656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22252665600).

15155005656 is an abundant number, since it is smaller than the sum of its proper divisors (29350325544).

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

15155005656 is a wasteful number, since it uses less digits than its factorization.

15155005656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9449 (or 9445 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 15155005656 in words is "fifteen billion, one hundred fifty-five million, five thousand, six hundred fifty-six".