509708677122 has 18 divisors (see below), whose sum is σ = 1104375363273. Its totient is φ = 169901882712.

The previous prime is 509708677097. The next prime is 509708677147. The reversal of 509708677122 is 221776807905.

It is a happy number.

509708677122 is a `hidden beast` number, since 509 + 7 + 0 + 8 + 6 + 7 + 7 + 122 = 666.

It is an interprime number because it is at equal distance from previous prime (509708677097) and next prime (509708677147).

It can be written as a sum of positive squares in 2 ways, for example, as 384237577161 + 125471099961 = 619869^2 + 354219^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=504831.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2944848 + ... + 3113124.

Almost surely, 2^509708677122 is an apocalyptic number.

509708677122 is an abundant number, since it is smaller than the sum of its proper divisors (594666686151).

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

509708677122 is an frugal number, since it uses more digits than its factorization.

509708677122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336562 (or 168282 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The spelling of 509708677122 in words is "five hundred nine billion, seven hundred eight million, six hundred seventy-seven thousand, one hundred twenty-two".