513551466506 has 12 divisors (see below), whose sum is σ = 834141287862. Its totient is φ = 237023753616.

The previous prime is 513551466473. The next prime is 513551466521. The reversal of 513551466506 is 605664155315.

It can be written as a sum of positive squares in 3 ways, for example, as 101311707025 + 412239759481 = 318295^2 + 642059^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 759691181 + ... + 759691856.

Almost surely, 2^513551466506 is an apocalyptic number.

513551466506 is a deficient number, since it is larger than the sum of its proper divisors (320589821356).

513551466506 is a wasteful number, since it uses less digits than its factorization.

513551466506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519383065 (or 1519383052 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 47.

The spelling of 513551466506 in words is "five hundred thirteen billion, five hundred fifty-one million, four hundred sixty-six thousand, five hundred six".