56615206600 has 96 divisors (see below), whose sum is σ = 134229176640. Its totient is φ = 22203360000.

The previous prime is 56615206589. The next prime is 56615206619. The reversal of 56615206600 is 660251665.

It is a self number, because there is not a number n which added to its sum of digits gives 56615206600.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2066995 + ... + 2094205.

It is an arithmetic number, because the mean of its divisors is an integer number (1398220590).

Almost surely, 2^56615206600 is an apocalyptic number.

56615206600 is a gapful number since it is divisible by the number (50) 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 56615206600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67114588320).

56615206600 is an abundant number, since it is smaller than the sum of its proper divisors (77613970040).

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

56615206600 is a wasteful number, since it uses less digits than its factorization.

56615206600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27431 (or 27422 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 56615206600 in words is "fifty-six billion, six hundred fifteen million, two hundred six thousand, six hundred".