520699240464 has 40 divisors (see below), whose sum is σ = 1448611991232. Its totient is φ = 160215150720.

The previous prime is 520699240459. The next prime is 520699240487. The reversal of 520699240464 is 464042996025.

It is a super-2 number, since 2×520699240464² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417226332 + ... + 417227579.

Almost surely, 2^520699240464 is an apocalyptic number.

It is an amenable number.

520699240464 is an abundant number, since it is smaller than the sum of its proper divisors (927912750768).

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

520699240464 is a wasteful number, since it uses less digits than its factorization.

520699240464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834453935 (or 834453929 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 520699240464 in words is "five hundred twenty billion, six hundred ninety-nine million, two hundred forty thousand, four hundred sixty-four".