56647972334 has 4 divisors (see below), whose sum is σ = 84971958504. Its totient is φ = 28323986166.

The previous prime is 56647972327. The next prime is 56647972361. The reversal of 56647972334 is 43327974665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43327974665 = 5 ⋅8665594933.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56647972334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14161993082 + ... + 14161993085.

It is an arithmetic number, because the mean of its divisors is an integer number (21242989626).

Almost surely, 2^56647972334 is an apocalyptic number.

56647972334 is a deficient number, since it is larger than the sum of its proper divisors (28323986170).

56647972334 is a wasteful number, since it uses less digits than its factorization.

56647972334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28323986169.

The product of its digits is 22861440, while the sum is 56.

The spelling of 56647972334 in words is "fifty-six billion, six hundred forty-seven million, nine hundred seventy-two thousand, three hundred thirty-four".