56615987380 has 48 divisors (see below), whose sum is σ = 119483226576. Its totient is φ = 22534364160.

The previous prime is 56615987369. The next prime is 56615987423. The reversal of 56615987380 is 8378951665.

56615987380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 9421031844 + 47194955536 = 97062^2 + 217244^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3334272 + ... + 3351208.

It is an arithmetic number, because the mean of its divisors is an integer number (2489233887).

Almost surely, 2^56615987380 is an apocalyptic number.

It is an amenable number.

56615987380 is an abundant number, since it is smaller than the sum of its proper divisors (62867239196).

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

56615987380 is a wasteful number, since it uses less digits than its factorization.

56615987380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17764 (or 17762 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 56615987380 in words is "fifty-six billion, six hundred fifteen million, nine hundred eighty-seven thousand, three hundred eighty".