53506135920 has 160 divisors (see below), whose sum is σ = 177743123712. Its totient is φ = 13267111936.

The previous prime is 53506135871. The next prime is 53506135931. The reversal of 53506135920 is 2953160535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 259639 + ... + 417641.

Almost surely, 2^53506135920 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 53506135920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88871561856).

53506135920 is an abundant number, since it is smaller than the sum of its proper divisors (124236987792).

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

53506135920 is a wasteful number, since it uses less digits than its factorization.

53506135920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158119 (or 158113 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 39.

The spelling of 53506135920 in words is "fifty-three billion, five hundred six million, one hundred thirty-five thousand, nine hundred twenty".