513552612722 has 6 divisors (see below), whose sum is σ = 770330439279. Its totient is φ = 256775799630.

The previous prime is 513552612709. The next prime is 513552612737. The reversal of 513552612722 is 227216255315.

It can be written as a sum of positive squares in only one way, i.e., 256776306361 + 256776306361 = 506731^2 + 506731^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=506731.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513552612722.

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, 760097 + ... + 1266827.

Almost surely, 2^513552612722 is an apocalyptic number.

513552612722 is a deficient number, since it is larger than the sum of its proper divisors (256777826557).

513552612722 is an frugal number, since it uses more digits than its factorization.

513552612722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013464 (or 506733 counting only the distinct ones).

The product of its digits is 252000, while the sum is 41.

The spelling of 513552612722 in words is "five hundred thirteen billion, five hundred fifty-two million, six hundred twelve thousand, seven hundred twenty-two".