520142772432520 has 64 divisors (see below), whose sum is σ = 1250990252346240. Its totient is φ = 194157217267200.

The previous prime is 520142772432511. The next prime is 520142772432527. The reversal of 520142772432520 is 25234277241025.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (520142772432527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6894749826 + ... + 6894825265.

It is an arithmetic number, because the mean of its divisors is an integer number (19546722692910).

Almost surely, 2^{520142772432520} is an apocalyptic number.

It is an amenable number.

520142772432520 is an abundant number, since it is smaller than the sum of its proper divisors (730847479913720).

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

520142772432520 is a wasteful number, since it uses less digits than its factorization.

520142772432520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13789575166 (or 13789575162 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 46.

The spelling of 520142772432520 in words is "five hundred twenty trillion, one hundred forty-two billion, seven hundred seventy-two million, four hundred thirty-two thousand, five hundred twenty".