113565564121563 has 48 divisors (see below), whose sum is σ = 171282915629280. Its totient is φ = 72444152217600.

The previous prime is 113565564121489. The next prime is 113565564121591. The reversal of 113565564121563 is 365121465565311.

113565564121563 is a `hidden beast` number, since 1 + 1 + 3 + 5 + 6 + 5 + 5 + 64 + 12 + 1 + 563 = 666.

It is not a de Polignac number, because 113565564121563 - 2¹³ = 113565564113371 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (113565564126563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3403323 + ... + 15450363.

It is an arithmetic number, because the mean of its divisors is an integer number (3568394075610).

Almost surely, 2^{113565564121563} is an apocalyptic number.

113565564121563 is a deficient number, since it is larger than the sum of its proper divisors (57717351507717).

113565564121563 is a wasteful number, since it uses less digits than its factorization.

113565564121563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12047580 (or 12047577 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 54.

The spelling of 113565564121563 in words is "one hundred thirteen trillion, five hundred sixty-five billion, five hundred sixty-four million, one hundred twenty-one thousand, five hundred sixty-three".