53591399904 has 48 divisors (see below), whose sum is σ = 160774201728. Its totient is φ = 15311828352.

The previous prime is 53591399887. The next prime is 53591399909. The reversal of 53591399904 is 40999319535.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53591399909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39873882 + ... + 39875225.

It is an arithmetic number, because the mean of its divisors is an integer number (3349462536).

Almost surely, 2^53591399904 is an apocalyptic number.

It is an amenable number.

53591399904 is an abundant number, since it is smaller than the sum of its proper divisors (107182801824).

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

53591399904 is a wasteful number, since it uses less digits than its factorization.

53591399904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79749127 (or 79749119 counting only the distinct ones).

The product of its (nonzero) digits is 5904900, while the sum is 57.

The spelling of 53591399904 in words is "fifty-three billion, five hundred ninety-one million, three hundred ninety-nine thousand, nine hundred four".