509080979565 has 24 divisors (see below), whose sum is σ = 915088775328. Its totient is φ = 271509855120.

The previous prime is 509080979543. The next prime is 509080979567. The reversal of 509080979565 is 565979080905.

509080979565 is a `hidden beast` number, since 509 + 0 + 8 + 0 + 9 + 79 + 56 + 5 = 666.

It is not a de Polignac number, because 509080979565 - 2⁶ = 509080979501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509080979567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209497131 + ... + 209499560.

It is an arithmetic number, because the mean of its divisors is an integer number (38128698972).

Almost surely, 2^509080979565 is an apocalyptic number.

It is an amenable number.

509080979565 is a deficient number, since it is larger than the sum of its proper divisors (406007795763).

509080979565 is an equidigital number, since it uses as much as digits as its factorization.

509080979565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418996711 (or 418996699 counting only the distinct ones).

The product of its (nonzero) digits is 30618000, while the sum is 63.

The spelling of 509080979565 in words is "five hundred nine billion, eighty million, nine hundred seventy-nine thousand, five hundred sixty-five".