56787763615 has 32 divisors (see below), whose sum is σ = 74986020864. Its totient is φ = 40942016640.

The previous prime is 56787763579. The next prime is 56787763619. The reversal of 56787763615 is 51636778765.

It is a happy number.

It is not a de Polignac number, because 56787763615 - 2³³ = 48197829023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56787763619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11641557 + ... + 11646433.

It is an arithmetic number, because the mean of its divisors is an integer number (2343313152).

Almost surely, 2^56787763615 is an apocalyptic number.

56787763615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56787763615 is a deficient number, since it is larger than the sum of its proper divisors (18198257249).

56787763615 is a wasteful number, since it uses less digits than its factorization.

56787763615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687.

The product of its digits is 44452800, while the sum is 61.

The spelling of 56787763615 in words is "fifty-six billion, seven hundred eighty-seven million, seven hundred sixty-three thousand, six hundred fifteen".