63531074565 has 48 divisors (see below), whose sum is σ = 126195184128. Its totient is φ = 28963588608.

The previous prime is 63531074501. The next prime is 63531074657. The reversal of 63531074565 is 56547013536.

63531074565 is a `hidden beast` number, since 6 + 3 + 5 + 3 + 10 + 74 + 565 = 666.

63531074565 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 63531074565 - 2⁶ = 63531074501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 63531074565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159172 + ... + 390381.

It is an arithmetic number, because the mean of its divisors is an integer number (2629066336).

Almost surely, 2^63531074565 is an apocalyptic number.

It is an amenable number.

63531074565 is a deficient number, since it is larger than the sum of its proper divisors (62664109563).

63531074565 is a wasteful number, since it uses less digits than its factorization.

63531074565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549938 (or 549935 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 45.

The spelling of 63531074565 in words is "sixty-three billion, five hundred thirty-one million, seventy-four thousand, five hundred sixty-five".