520556349511 has 12 divisors (see below), whose sum is σ = 575343022072. Its totient is φ = 470618478000.

The previous prime is 520556349497. The next prime is 520556349527. The reversal of 520556349511 is 115943655025.

It is not a de Polignac number, because 520556349511 - 2²³ = 520547960903 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520556349011) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11862405 + ... + 11906206.

Almost surely, 2^520556349511 is an apocalyptic number.

520556349511 is a deficient number, since it is larger than the sum of its proper divisors (54786672561).

520556349511 is a wasteful number, since it uses less digits than its factorization.

520556349511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23768814 (or 23768803 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 520556349511 in words is "five hundred twenty billion, five hundred fifty-six million, three hundred forty-nine thousand, five hundred eleven".