516642224018 has 18 divisors (see below), whose sum is σ = 778740117831. Its totient is φ = 257068268364.

The previous prime is 516642224009. The next prime is 516642224027. The reversal of 516642224018 is 810422246615.

It is an interprime number because it is at equal distance from previous prime (516642224009) and next prime (516642224027).

It can be written as a sum of positive squares in only one way, i.e., 258321112009 + 258321112009 = 508253^2 + 508253^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=508253.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 230745743 + ... + 230747981.

Almost surely, 2^516642224018 is an apocalyptic number.

516642224018 is a deficient number, since it is larger than the sum of its proper divisors (262097893813).

516642224018 is an frugal number, since it uses more digits than its factorization.

516642224018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934 (or 2468 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 516642224018 in words is "five hundred sixteen billion, six hundred forty-two million, two hundred twenty-four thousand, eighteen".