52139373440 has 512 divisors, whose sum is σ = 163748874240. Its totient is φ = 15392931840.

The previous prime is 52139373421. The next prime is 52139373449. The reversal of 52139373440 is 4437393125.

It is a happy number.

52139373440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52139373449) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 177949934 + ... + 177950226.

It is an arithmetic number, because the mean of its divisors is an integer number (319822020).

Almost surely, 2^52139373440 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 52139373440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81874437120).

52139373440 is an abundant number, since it is smaller than the sum of its proper divisors (111609500800).

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

52139373440 is a wasteful number, since it uses less digits than its factorization.

52139373440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 52139373440 in words is "fifty-two billion, one hundred thirty-nine million, three hundred seventy-three thousand, four hundred forty".