522331939872 has 162 divisors, whose sum is σ = 1527939398349. Its totient is φ = 169257772800.

The previous prime is 522331939837. The next prime is 522331939903. The reversal of 522331939872 is 278939133225.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

522331939872 is a `hidden beast` number, since 5 + 2 + 233 + 19 + 398 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 421413898896 + 100918040976 = 649164^2 + 317676^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=511044.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 453806497 + ... + 453807647.

Almost surely, 2^522331939872 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 522331939872

522331939872 is an abundant number, since it is smaller than the sum of its proper divisors (1005607458477).

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

522331939872 is an equidigital number, since it uses as much as digits as its factorization.

522331939872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 1193 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 522331939872 in words is "five hundred twenty-two billion, three hundred thirty-one million, nine hundred thirty-nine thousand, eight hundred seventy-two".