656556115556 has 48 divisors (see below), whose sum is σ = 1266599557440. Its totient is φ = 295299102720.

The previous prime is 656556115547. The next prime is 656556115559. The reversal of 656556115556 is 655511655656.

656556115556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (656556115559) 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, 26974400 + ... + 26998728.

It is an arithmetic number, because the mean of its divisors is an integer number (26387490780).

Almost surely, 2^656556115556 is an apocalyptic number.

It is an amenable number.

656556115556 is a deficient number, since it is larger than the sum of its proper divisors (610043441884).

656556115556 is a wasteful number, since it uses less digits than its factorization.

656556115556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30764 (or 30762 counting only the distinct ones).

The product of its digits is 20250000, while the sum is 56.

The spelling of 656556115556 in words is "six hundred fifty-six billion, five hundred fifty-six million, one hundred fifteen thousand, five hundred fifty-six".