56784763839 has 32 divisors (see below), whose sum is σ = 81886485760. Its totient is φ = 34880025600.

The previous prime is 56784763813. The next prime is 56784763843. The reversal of 56784763839 is 93836748765.

It is not a de Polignac number, because 56784763839 - 2¹¹ = 56784761791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56784763839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56784763879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7084344 + ... + 7092354.

It is an arithmetic number, because the mean of its divisors is an integer number (2558952680).

Almost surely, 2^56784763839 is an apocalyptic number.

56784763839 is a deficient number, since it is larger than the sum of its proper divisors (25101721921).

56784763839 is a wasteful number, since it uses less digits than its factorization.

56784763839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11431.

The product of its digits is 182891520, while the sum is 66.

The spelling of 56784763839 in words is "fifty-six billion, seven hundred eighty-four million, seven hundred sixty-three thousand, eight hundred thirty-nine".