56491423560 has 384 divisors, whose sum is σ = 216302486400. Its totient is φ = 12605829120.

The previous prime is 56491423543. The next prime is 56491423609. The reversal of 56491423560 is 6532419465.

56491423560 is a `hidden beast` number, since 5 + 6 + 49 + 1 + 42 + 3 + 560 = 666.

56491423560 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 (45).

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, 21053979 + ... + 21056661.

It is an arithmetic number, because the mean of its divisors is an integer number (563287725).

Almost surely, 2^56491423560 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 56491423560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108151243200).

56491423560 is an abundant number, since it is smaller than the sum of its proper divisors (159811062840).

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

56491423560 is a wasteful number, since it uses less digits than its factorization.

56491423560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133 (or 3126 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 56491423560 in words is "fifty-six billion, four hundred ninety-one million, four hundred twenty-three thousand, five hundred sixty".