56021596920903 has 4 divisors (see below), whose sum is σ = 74695462561208. Its totient is φ = 37347731280600.

The previous prime is 56021596920893. The next prime is 56021596920943. The reversal of 56021596920903 is 30902969512065.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-56021596920903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56021596920943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9336932820148 + ... + 9336932820153.

It is an arithmetic number, because the mean of its divisors is an integer number (18673865640302).

Almost surely, 2^{56021596920903} is an apocalyptic number.

56021596920903 is a deficient number, since it is larger than the sum of its proper divisors (18673865640305).

56021596920903 is a wasteful number, since it uses less digits than its factorization.

56021596920903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18673865640304.

The product of its (nonzero) digits is 7873200, while the sum is 57.

The spelling of 56021596920903 in words is "fifty-six trillion, twenty-one billion, five hundred ninety-six million, nine hundred twenty thousand, nine hundred three".