56143556656 has 60 divisors (see below), whose sum is σ = 120063178312. Its totient is φ = 25413696000.

The previous prime is 56143556603. The next prime is 56143556701. The reversal of 56143556656 is 65665534165.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406411 + ... + 526741.

Almost surely, 2^56143556656 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 56143556656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60031589156).

56143556656 is an abundant number, since it is smaller than the sum of its proper divisors (63919621656).

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

56143556656 is a wasteful number, since it uses less digits than its factorization.

56143556656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120602 (or 120585 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 52.

The spelling of 56143556656 in words is "fifty-six billion, one hundred forty-three million, five hundred fifty-six thousand, six hundred fifty-six".