56563277617 has 16 divisors (see below), whose sum is σ = 72240465024. Its totient is φ = 43000272000.

The previous prime is 56563277579. The next prime is 56563277669. The reversal of 56563277617 is 71677236565.

It is a happy number.

It is not a de Polignac number, because 56563277617 - 2¹⁹ = 56562753329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56563277317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8955234 + ... + 8961547.

It is an arithmetic number, because the mean of its divisors is an integer number (4515029064).

Almost surely, 2^56563277617 is an apocalyptic number.

It is an amenable number.

56563277617 is a deficient number, since it is larger than the sum of its proper divisors (15677187407).

56563277617 is a wasteful number, since it uses less digits than its factorization.

56563277617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17916840.

The product of its digits is 11113200, while the sum is 55.

The spelling of 56563277617 in words is "fifty-six billion, five hundred sixty-three million, two hundred seventy-seven thousand, six hundred seventeen".