53644413528 has 24 divisors (see below), whose sum is σ = 145286953500. Its totient is φ = 17881471152.

The previous prime is 53644413523. The next prime is 53644413551. The reversal of 53644413528 is 82531444635.

53644413528 is a `hidden beast` number, since 53 + 6 + 444 + 135 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53644413521) 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 5 ways as a sum of consecutive naturals, for example, 372530578 + ... + 372530721.

Almost surely, 2^53644413528 is an apocalyptic number.

It is an amenable number.

53644413528 is an abundant number, since it is smaller than the sum of its proper divisors (91642539972).

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

53644413528 is a wasteful number, since it uses less digits than its factorization.

53644413528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745061311 (or 745061304 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The spelling of 53644413528 in words is "fifty-three billion, six hundred forty-four million, four hundred thirteen thousand, five hundred twenty-eight".