56636863665 has 32 divisors (see below), whose sum is σ = 93314052480. Its totient is φ = 29312285184.

The previous prime is 56636863663. The next prime is 56636863733.

56636863665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56636863665 - 2¹ = 56636863663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56636863599 and 56636863608.

It is not an unprimeable number, because it can be changed into a prime (56636863663) 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, 75717 + ... + 344973.

It is an arithmetic number, because the mean of its divisors is an integer number (2916064140).

Almost surely, 2^56636863665 is an apocalyptic number.

It is an amenable number.

56636863665 is a deficient number, since it is larger than the sum of its proper divisors (36677188815).

56636863665 is a wasteful number, since it uses less digits than its factorization.

56636863665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269681.

The product of its digits is 83980800, while the sum is 60.

The spelling of 56636863665 in words is "fifty-six billion, six hundred thirty-six million, eight hundred sixty-three thousand, six hundred sixty-five".