53815385232 has 600 divisors, whose sum is σ = 194581474560. Its totient is φ = 14265538560.

The previous prime is 53815385171. The next prime is 53815385233. The reversal of 53815385232 is 23258351835.

It is a happy number.

53815385232 is a `hidden beast` number, since 5 + 3 + 81 + 538 + 5 + 2 + 32 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53815385233) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 85285557 + ... + 85286187.

Almost surely, 2^53815385232 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 53815385232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97290737280).

53815385232 is an abundant number, since it is smaller than the sum of its proper divisors (140766089328).

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

53815385232 is a wasteful number, since it uses less digits than its factorization.

53815385232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 739 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 53815385232 in words is "fifty-three billion, eight hundred fifteen million, three hundred eighty-five thousand, two hundred thirty-two".