520135810887 has 32 divisors (see below), whose sum is σ = 869471815680. Its totient is φ = 268690900320.

The previous prime is 520135810837. The next prime is 520135810919. The reversal of 520135810887 is 788018531025.

It is not a de Polignac number, because 520135810887 - 2⁸ = 520135810631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520135810837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6248233 + ... + 6330930.

It is an arithmetic number, because the mean of its divisors is an integer number (27170994240).

Almost surely, 2^520135810887 is an apocalyptic number.

520135810887 is a deficient number, since it is larger than the sum of its proper divisors (349336004793).

520135810887 is a wasteful number, since it uses less digits than its factorization.

520135810887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12579363.

The product of its (nonzero) digits is 537600, while the sum is 48.

The spelling of 520135810887 in words is "five hundred twenty billion, one hundred thirty-five million, eight hundred ten thousand, eight hundred eighty-seven".