15655255600 has 120 divisors (see below), whose sum is σ = 39275454960. Its totient is φ = 5989186560.

The previous prime is 15655255559. The next prime is 15655255607. The reversal of 15655255600 is 655255651.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (15655255607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1234894 + ... + 1247506.

It is an arithmetic number, because the mean of its divisors is an integer number (327295458).

Almost surely, 2^15655255600 is an apocalyptic number.

15655255600 is a gapful number since it is divisible by the number (10) 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 15655255600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19637727480).

15655255600 is an abundant number, since it is smaller than the sum of its proper divisors (23620199360).

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

15655255600 is a wasteful number, since it uses less digits than its factorization.

15655255600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12767 (or 12756 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 15655255600 in words is "fifteen billion, six hundred fifty-five million, two hundred fifty-five thousand, six hundred".