56715376647 has 32 divisors (see below), whose sum is σ = 79165900800. Its totient is φ = 36069431552.

The previous prime is 56715376577. The next prime is 56715376667. The reversal of 56715376647 is 74667351765.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56715376647 - 2⁸ = 56715376391 is a prime.

It is a super-2 number, since 2×56715376647² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56715376667) 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, 18759778 + ... + 18762800.

It is an arithmetic number, because the mean of its divisors is an integer number (2473934400).

Almost surely, 2^56715376647 is an apocalyptic number.

56715376647 is a deficient number, since it is larger than the sum of its proper divisors (22450524153).

56715376647 is a wasteful number, since it uses less digits than its factorization.

56715376647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5567.

The product of its digits is 22226400, while the sum is 57.

The spelling of 56715376647 in words is "fifty-six billion, seven hundred fifteen million, three hundred seventy-six thousand, six hundred forty-seven".