56403069381 has 48 divisors (see below), whose sum is σ = 88595520000. Its totient is φ = 34446591360.

The previous prime is 56403069329. The next prime is 56403069403. The reversal of 56403069381 is 18396030465.

56403069381 is a `hidden beast` number, since 564 + 0 + 3 + 0 + 6 + 9 + 3 + 81 = 666.

It is not a de Polignac number, because 56403069381 - 2¹⁰ = 56403068357 is a prime.

It is a super-2 number, since 2×56403069381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56403069781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8207815 + ... + 8214683.

It is an arithmetic number, because the mean of its divisors is an integer number (1845740000).

Almost surely, 2^56403069381 is an apocalyptic number.

It is an amenable number.

56403069381 is a deficient number, since it is larger than the sum of its proper divisors (32192450619).

56403069381 is a wasteful number, since it uses less digits than its factorization.

56403069381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8474 (or 8471 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 56403069381 in words is "fifty-six billion, four hundred three million, sixty-nine thousand, three hundred eighty-one".