517406399964 has 36 divisors (see below), whose sum is σ = 1326309369840. Its totient is φ = 170039661120.

The previous prime is 517406399903. The next prime is 517406399981. The reversal of 517406399964 is 469993604715.

517406399964 is a `hidden beast` number, since 51 + 7 + 406 + 3 + 99 + 96 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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, 101211529 + ... + 101216640.

It is an arithmetic number, because the mean of its divisors is an integer number (36841926940).

Almost surely, 2^517406399964 is an apocalyptic number.

It is an amenable number.

517406399964 is an abundant number, since it is smaller than the sum of its proper divisors (808902969876).

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

517406399964 is a wasteful number, since it uses less digits than its factorization.

517406399964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202428250 (or 202428245 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 63.

The spelling of 517406399964 in words is "five hundred seventeen billion, four hundred six million, three hundred ninety-nine thousand, nine hundred sixty-four".