56621535803 has 6 divisors (see below), whose sum is σ = 65865868236. Its totient is φ = 48532744932.

The previous prime is 56621535797. The next prime is 56621535851. The reversal of 56621535803 is 30853512665.

56621535803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56621535803 - 2¹⁸ = 56621273659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56621535853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 577770725 + ... + 577770822.

It is an arithmetic number, because the mean of its divisors is an integer number (10977644706).

Almost surely, 2^56621535803 is an apocalyptic number.

56621535803 is a deficient number, since it is larger than the sum of its proper divisors (9244332433).

56621535803 is a wasteful number, since it uses less digits than its factorization.

56621535803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155541561 (or 1155541554 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 56621535803 in words is "fifty-six billion, six hundred twenty-one million, five hundred thirty-five thousand, eight hundred three".