520440977264 has 40 divisors (see below), whose sum is σ = 1086504438432. Its totient is φ = 240074277120.

The previous prime is 520440977257. The next prime is 520440977297. The reversal of 520440977264 is 462779044025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285164 + ... + 1059339.

Almost surely, 2^520440977264 is an apocalyptic number.

It is an amenable number.

520440977264 is an abundant number, since it is smaller than the sum of its proper divisors (566063461168).

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

520440977264 is a wasteful number, since it uses less digits than its factorization.

520440977264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346385 (or 1346379 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 520440977264 in words is "five hundred twenty billion, four hundred forty million, nine hundred seventy-seven thousand, two hundred sixty-four".