36556665563 has 24 divisors (see below), whose sum is σ = 40630329600. Its totient is φ = 32864713200.

The previous prime is 36556665533. The next prime is 36556665599.

36556665563 is nontrivially palindromic in base 10.

36556665563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 36556665563 - 2¹⁸ = 36556403419 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36556665499 and 36556665508.

It is not an unprimeable number, because it can be changed into a prime (36556665533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4016648 + ... + 4025738.

It is an arithmetic number, because the mean of its divisors is an integer number (1692930400).

Almost surely, 2^36556665563 is an apocalyptic number.

36556665563 is a deficient number, since it is larger than the sum of its proper divisors (4073664037).

36556665563 is a wasteful number, since it uses less digits than its factorization.

36556665563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9479 (or 9468 counting only the distinct ones).

The product of its digits is 43740000, while the sum is 56.

The spelling of 36556665563 in words is "thirty-six billion, five hundred fifty-six million, six hundred sixty-five thousand, five hundred sixty-three".