56519373440 has 32 divisors (see below), whose sum is σ = 135116628660. Its totient is φ = 22607749120.

The previous prime is 56519373433. The next prime is 56519373487. The reversal of 56519373440 is 4437391565.

It can be written as a sum of positive squares in 2 ways, for example, as 54707338816 + 1812034624 = 233896^2 + 42568^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44155121 + ... + 44156400.

Almost surely, 2^56519373440 is an apocalyptic number.

It is an amenable number.

56519373440 is an abundant number, since it is smaller than the sum of its proper divisors (78597255220).

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

56519373440 is an equidigital number, since it uses as much as digits as its factorization.

56519373440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88311540 (or 88311528 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 56519373440 in words is "fifty-six billion, five hundred nineteen million, three hundred seventy-three thousand, four hundred forty".