53318785432 has 64 divisors (see below), whose sum is σ = 112911472800. Its totient is φ = 23381514240.

The previous prime is 53318785423. The next prime is 53318785463. The reversal of 53318785432 is 23458781335.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3496288 + ... + 3511504.

Almost surely, 2^53318785432 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 53318785432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56455736400).

53318785432 is an abundant number, since it is smaller than the sum of its proper divisors (59592687368).

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

53318785432 is a wasteful number, since it uses less digits than its factorization.

53318785432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16636 (or 16632 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 49.

The spelling of 53318785432 in words is "fifty-three billion, three hundred eighteen million, seven hundred eighty-five thousand, four hundred thirty-two".