520099532478 has 24 divisors (see below), whose sum is σ = 1148144253048. Its totient is φ = 170095444272.

The previous prime is 520099532429. The next prime is 520099532483. The reversal of 520099532478 is 874235990025.

520099532478 is a `hidden beast` number, since 52 + 0 + 0 + 9 + 95 + 32 + 478 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272587900 + ... + 272589807.

It is an arithmetic number, because the mean of its divisors is an integer number (47839343877).

Almost surely, 2^520099532478 is an apocalyptic number.

520099532478 is an abundant number, since it is smaller than the sum of its proper divisors (628044720570).

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

520099532478 is a wasteful number, since it uses less digits than its factorization.

520099532478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545177768 (or 545177765 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 520099532478 in words is "five hundred twenty billion, ninety-nine million, five hundred thirty-two thousand, four hundred seventy-eight".