513147307922 has 6 divisors (see below), whose sum is σ = 769722481479. Its totient is φ = 256573147430.

The previous prime is 513147307873. The next prime is 513147307943. The reversal of 513147307922 is 229703741315.

It can be written as a sum of positive squares in only one way, i.e., 256573653961 + 256573653961 = 506531^2 + 506531^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=506531.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 759797 + ... + 1266327.

Almost surely, 2^513147307922 is an apocalyptic number.

513147307922 is a deficient number, since it is larger than the sum of its proper divisors (256575173557).

513147307922 is an frugal number, since it uses more digits than its factorization.

513147307922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013064 (or 506533 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 513147307922 in words is "five hundred thirteen billion, one hundred forty-seven million, three hundred seven thousand, nine hundred twenty-two".