56475015856 has 180 divisors, whose sum is σ = 133783697712. Its totient is φ = 23092933248.

The previous prime is 56475015811. The next prime is 56475015899. The reversal of 56475015856 is 65851057465.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142254250 + ... + 142254646.

Almost surely, 2^56475015856 is an apocalyptic number.

56475015856 is a gapful number since it is divisible by the number (56) 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 56475015856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66891848856).

56475015856 is an abundant number, since it is smaller than the sum of its proper divisors (77308681856).

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

56475015856 is an frugal number, since it uses more digits than its factorization.

56475015856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 5040000, while the sum is 52.

The spelling of 56475015856 in words is "fifty-six billion, four hundred seventy-five million, fifteen thousand, eight hundred fifty-six".