56561662476 has 288 divisors, whose sum is σ = 171333792000. Its totient is φ = 16078487040.

The previous prime is 56561662441. The next prime is 56561662483. The reversal of 56561662476 is 67426616565.

56561662476 is a `hidden beast` number, since 5 + 6 + 5 + 6 + 1 + 6 + 624 + 7 + 6 = 666.

56561662476 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 26566180 + ... + 26568308.

It is an arithmetic number, because the mean of its divisors is an integer number (594909000).

Almost surely, 2^56561662476 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 56561662476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85666896000).

56561662476 is an abundant number, since it is smaller than the sum of its proper divisors (114772129524).

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

56561662476 is a wasteful number, since it uses less digits than its factorization.

56561662476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290 (or 2271 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The spelling of 56561662476 in words is "fifty-six billion, five hundred sixty-one million, six hundred sixty-two thousand, four hundred seventy-six".