520465662564172 has 24 divisors (see below), whose sum is σ = 981391951388016. Its totient is φ = 240088956312768.

The previous prime is 520465662564143. The next prime is 520465662564193. The reversal of 520465662564172 is 271465266564025.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 520465662564172.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2624168023 + ... + 2624366350.

It is an arithmetic number, because the mean of its divisors is an integer number (40891331307834).

Almost surely, 2^{520465662564172} is an apocalyptic number.

520465662564172 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

520465662564172 is a deficient number, since it is larger than the sum of its proper divisors (460926288823844).

520465662564172 is a wasteful number, since it uses less digits than its factorization.

520465662564172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248536297 (or 5248536295 counting only the distinct ones).

The product of its (nonzero) digits is 145152000, while the sum is 61.

The spelling of 520465662564172 in words is "five hundred twenty trillion, four hundred sixty-five billion, six hundred sixty-two million, five hundred sixty-four thousand, one hundred seventy-two".