53239970736 has 160 divisors (see below), whose sum is σ = 158190510080. Its totient is φ = 17130403584.

The previous prime is 53239970717. The next prime is 53239970747. The reversal of 53239970736 is 63707993235.

53239970736 is a `hidden beast` number, since 532 + 3 + 9 + 9 + 70 + 7 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2016855 + ... + 2043081.

It is an arithmetic number, because the mean of its divisors is an integer number (988690688).

Almost surely, 2^53239970736 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 53239970736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79095255040).

53239970736 is an abundant number, since it is smaller than the sum of its proper divisors (104950539344).

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

53239970736 is a wasteful number, since it uses less digits than its factorization.

53239970736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26408 (or 26396 counting only the distinct ones).

The product of its (nonzero) digits is 6429780, while the sum is 54.

The spelling of 53239970736 in words is "fifty-three billion, two hundred thirty-nine million, nine hundred seventy thousand, seven hundred thirty-six".