56555747435616 has 576 divisors, whose sum is σ = 180727437800448. Its totient is φ = 15266451456000.

The previous prime is 56555747435581. The next prime is 56555747435639. The reversal of 56555747435616 is 61653474755565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4841681296 + ... + 4841692976.

It is an arithmetic number, because the mean of its divisors is an integer number (313762912848).

Almost surely, 2^{56555747435616} 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 56555747435616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90363718900224).

56555747435616 is an abundant number, since it is smaller than the sum of its proper divisors (124171690364832).

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

56555747435616 is a wasteful number, since it uses less digits than its factorization.

56555747435616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12147 (or 12108 counting only the distinct ones).

The product of its digits is 1587600000, while the sum is 69.

The spelling of 56555747435616 in words is "fifty-six trillion, five hundred fifty-five billion, seven hundred forty-seven million, four hundred thirty-five thousand, six hundred sixteen".