56686784019 has 16 divisors (see below), whose sum is σ = 80038236960. Its totient is φ = 35563806720.

The previous prime is 56686783969. The next prime is 56686784023. The reversal of 56686784019 is 91048768665.

It is not a de Polignac number, because 56686784019 - 2⁷ = 56686783891 is a prime.

It is a super-2 number, since 2×56686784019² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56686784719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379179 + ... + 507099.

It is an arithmetic number, because the mean of its divisors is an integer number (5002389810).

Almost surely, 2^56686784019 is an apocalyptic number.

56686784019 is a deficient number, since it is larger than the sum of its proper divisors (23351452941).

56686784019 is a wasteful number, since it uses less digits than its factorization.

56686784019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136630.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 56686784019 in words is "fifty-six billion, six hundred eighty-six million, seven hundred eighty-four thousand, nineteen".