53572566465 has 48 divisors (see below), whose sum is σ = 101659072320. Its totient is φ = 25882727040.

The previous prime is 53572566451. The next prime is 53572566469. The reversal of 53572566465 is 56466527535.

53572566465 is a `hidden beast` number, since 5 + 3 + 5 + 72 + 566 + 4 + 6 + 5 = 666.

It is not a de Polignac number, because 53572566465 - 2⁴ = 53572566449 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 (53572566469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51130 + ... + 331299.

It is an arithmetic number, because the mean of its divisors is an integer number (2117897340).

Almost surely, 2^53572566465 is an apocalyptic number.

53572566465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

53572566465 is a deficient number, since it is larger than the sum of its proper divisors (48086505855).

53572566465 is a wasteful number, since it uses less digits than its factorization.

53572566465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382734 (or 382731 counting only the distinct ones).

The product of its digits is 22680000, while the sum is 54.

The spelling of 53572566465 in words is "fifty-three billion, five hundred seventy-two million, five hundred sixty-six thousand, four hundred sixty-five".