520747636475 has 18 divisors (see below), whose sum is σ = 709766121540. Its totient is φ = 378725551600.

The previous prime is 520747636427. The next prime is 520747636489. The reversal of 520747636475 is 574636747025.

It is not a de Polignac number, because 520747636475 - 2²² = 520743442171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520747636475.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 86070965 + ... + 86077014.

Almost surely, 2^520747636475 is an apocalyptic number.

520747636475 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

520747636475 is a deficient number, since it is larger than the sum of its proper divisors (189018485065).

520747636475 is a wasteful number, since it uses less digits than its factorization.

520747636475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172148011 (or 172147995 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 56.

The spelling of 520747636475 in words is "five hundred twenty billion, seven hundred forty-seven million, six hundred thirty-six thousand, four hundred seventy-five".