56381937903 has 24 divisors (see below), whose sum is σ = 81676533536. Its totient is φ = 37479153600.

The previous prime is 56381937901. The next prime is 56381937907. The reversal of 56381937903 is 30973918365.

56381937903 is a `hidden beast` number, since 563 + 8 + 1 + 9 + 3 + 79 + 0 + 3 = 666.

It is not a de Polignac number, because 56381937903 - 2¹ = 56381937901 is a prime.

It is a super-4 number, since 4×56381937903⁴ (a number of 44 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56381937903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56381937901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13323798 + ... + 13328028.

Almost surely, 2^56381937903 is an apocalyptic number.

56381937903 is a deficient number, since it is larger than the sum of its proper divisors (25294595633).

56381937903 is a wasteful number, since it uses less digits than its factorization.

56381937903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8175 (or 8172 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 56381937903 in words is "fifty-six billion, three hundred eighty-one million, nine hundred thirty-seven thousand, nine hundred three".