520505631326 has 16 divisors (see below), whose sum is σ = 786941775360. Its totient is φ = 258191892000.

The previous prime is 520505631319. The next prime is 520505631337. The reversal of 520505631326 is 623136505025.

It is a super-2 number, since 2×520505631326² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520505631326.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9184076 + ... + 9240576.

It is an arithmetic number, because the mean of its divisors is an integer number (49183860960).

Almost surely, 2^520505631326 is an apocalyptic number.

520505631326 is a deficient number, since it is larger than the sum of its proper divisors (266436144034).

520505631326 is a wasteful number, since it uses less digits than its factorization.

520505631326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92899.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 520505631326 in words is "five hundred twenty billion, five hundred five million, six hundred thirty-one thousand, three hundred twenty-six".