52531640320 has 192 divisors, whose sum is σ = 129950140320. Its totient is φ = 20368588800.

The previous prime is 52531640309. The next prime is 52531640321. The reversal of 52531640320 is 2304613525.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52531640321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88585944 + ... + 88586536.

Almost surely, 2^52531640320 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 52531640320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64975070160).

52531640320 is an abundant number, since it is smaller than the sum of its proper divisors (77418500000).

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

52531640320 is a wasteful number, since it uses less digits than its factorization.

52531640320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 52531640320 in words is "fifty-two billion, five hundred thirty-one million, six hundred forty thousand, three hundred twenty".