53990901504 has 216 divisors, whose sum is σ = 162368099712. Its totient is φ = 17234657280.

The previous prime is 53990901479. The next prime is 53990901533. The reversal of 53990901504 is 40510909935.

It is a happy number.

53990901504 is a `hidden beast` number, since 53 + 9 + 9 + 0 + 90 + 1 + 504 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 53990901504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6924232 + ... + 6932024.

Almost surely, 2^53990901504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53990901504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81184049856).

53990901504 is an abundant number, since it is smaller than the sum of its proper divisors (108377198208).

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

53990901504 is a wasteful number, since it uses less digits than its factorization.

53990901504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7943 (or 7926 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The spelling of 53990901504 in words is "fifty-three billion, nine hundred ninety million, nine hundred one thousand, five hundred four".