522818334972 has 96 divisors (see below), whose sum is σ = 1374920870400. Its totient is φ = 171779619456.

The previous prime is 522818334931. The next prime is 522818334989. The reversal of 522818334972 is 279433818225.

522818334972 is a `hidden beast` number, since 5 + 228 + 1 + 8 + 3 + 349 + 72 = 666.

It is a super-2 number, since 2×522818334972² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3868768 + ... + 4001624.

It is an arithmetic number, because the mean of its divisors is an integer number (14322092400).

Almost surely, 2^522818334972 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 522818334972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687460435200).

522818334972 is an abundant number, since it is smaller than the sum of its proper divisors (852102535428).

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

522818334972 is a wasteful number, since it uses less digits than its factorization.

522818334972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133392 (or 133384 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 522818334972 in words is "five hundred twenty-two billion, eight hundred eighteen million, three hundred thirty-four thousand, nine hundred seventy-two".