56503904840 has 32 divisors (see below), whose sum is σ = 127146915000. Its totient is φ = 22599227904.

The previous prime is 56503904837. The next prime is 56503904843. The reversal of 56503904840 is 4840930565.

It is an interprime number because it is at equal distance from previous prime (56503904837) and next prime (56503904843).

It can be written as a sum of positive squares in 4 ways, for example, as 52792414756 + 3711490084 = 229766^2 + 60922^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56503904791 and 56503904800.

It is not an unprimeable number, because it can be changed into a prime (56503904843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349436 + ... + 484884.

Almost surely, 2^56503904840 is an apocalyptic number.

It is an amenable number.

56503904840 is an abundant number, since it is smaller than the sum of its proper divisors (70643010160).

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

56503904840 is a wasteful number, since it uses less digits than its factorization.

56503904840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145889 (or 145885 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 56503904840 in words is "fifty-six billion, five hundred three million, nine hundred four thousand, eight hundred forty".