56999823438 has 16 divisors (see below), whose sum is σ = 114070871376. Its totient is φ = 18988070400.

The previous prime is 56999823343. The next prime is 56999823457. The reversal of 56999823438 is 83432899965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2957281 + ... + 2976492.

It is an arithmetic number, because the mean of its divisors is an integer number (7129429461).

Almost surely, 2^56999823438 is an apocalyptic number.

56999823438 is an abundant number, since it is smaller than the sum of its proper divisors (57071047938).

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

56999823438 is a wasteful number, since it uses less digits than its factorization.

56999823438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935379.

The product of its digits is 100776960, while the sum is 66.

The spelling of 56999823438 in words is "fifty-six billion, nine hundred ninety-nine million, eight hundred twenty-three thousand, four hundred thirty-eight".