516863652516 has 18 divisors (see below), whose sum is σ = 1306516455062. Its totient is φ = 172287884160.

The previous prime is 516863652493. The next prime is 516863652521. The reversal of 516863652516 is 615256368615.

516863652516 is a `hidden beast` number, since 5 + 1 + 6 + 8 + 63 + 65 + 2 + 516 = 666.

It can be written as a sum of positive squares in only one way, i.e., 374360422500 + 142503230016 = 611850^2 + 377496^2 .

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

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, 7178661805 + ... + 7178661876.

Almost surely, 2^516863652516 is an apocalyptic number.

It is an amenable number.

516863652516 is an abundant number, since it is smaller than the sum of its proper divisors (789652802546).

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

516863652516 is a wasteful number, since it uses less digits than its factorization.

516863652516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14357323691 (or 14357323686 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The spelling of 516863652516 in words is "five hundred sixteen billion, eight hundred sixty-three million, six hundred fifty-two thousand, five hundred sixteen".