522990371912 has 36 divisors (see below), whose sum is σ = 1035011114505. Its totient is φ = 247713872256.

The previous prime is 522990371909. The next prime is 522990371933. The reversal of 522990371912 is 219173099225.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 270510251236 + 252480120676 = 520106^2 + 502474^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=511366.

It is a super-2 number, since 2×522990371912² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 38857088 + ... + 38870544.

Almost surely, 2^522990371912 is an apocalyptic number.

It is an amenable number.

522990371912 is a deficient number, since it is larger than the sum of its proper divisors (512020742593).

522990371912 is an frugal number, since it uses more digits than its factorization.

522990371912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26958 (or 13478 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 50.

Multiplying 522990371912 by its sum of digits (50), we get a square (26149518595600 = 5113660²).

The spelling of 522990371912 in words is "five hundred twenty-two billion, nine hundred ninety million, three hundred seventy-one thousand, nine hundred twelve".