53644875264 has 80 divisors (see below), whose sum is σ = 158792597040. Its totient is φ = 17881620480.

The previous prime is 53644875239. The next prime is 53644875269. The reversal of 53644875264 is 46257844635.

53644875264 is a `hidden beast` number, since 5 + 36 + 4 + 4 + 87 + 526 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 53644875264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53644875269) 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 7 ways as a sum of consecutive naturals, for example, 1926457 + ... + 1954104.

It is an arithmetic number, because the mean of its divisors is an integer number (1984907463).

Almost surely, 2^53644875264 is an apocalyptic number.

53644875264 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

53644875264 is an abundant number, since it is smaller than the sum of its proper divisors (105147721776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53644875264 is an equidigital number, since it uses as much as digits as its factorization.

53644875264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880588 (or 3880566 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 54.

The spelling of 53644875264 in words is "fifty-three billion, six hundred forty-four million, eight hundred seventy-five thousand, two hundred sixty-four".