509005455864 has 32 divisors (see below), whose sum is σ = 1272676896720. Its totient is φ = 169646717696.

The previous prime is 509005455841. The next prime is 509005455877. The reversal of 509005455864 is 468554500905.

It is a happy number.

509005455864 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 1168959 + ... + 1544174.

Almost surely, 2^509005455864 is an apocalyptic number.

It is an amenable number.

509005455864 is an abundant number, since it is smaller than the sum of its proper divisors (763671440856).

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

509005455864 is a wasteful number, since it uses less digits than its factorization.

509005455864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720959 (or 2720955 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 51.

The spelling of 509005455864 in words is "five hundred nine billion, five million, four hundred fifty-five thousand, eight hundred sixty-four".