516321123616 has 12 divisors (see below), whose sum is σ = 1016507212182. Its totient is φ = 258160561792.

The previous prime is 516321123559. The next prime is 516321123653. The reversal of 516321123616 is 616321123615.

It can be written as a sum of positive squares in only one way, i.e., 417838131216 + 98482992400 = 646404^2 + 313820^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8067517525 + ... + 8067517588.

Almost surely, 2^516321123616 is an apocalyptic number.

It is an amenable number.

516321123616 is a deficient number, since it is larger than the sum of its proper divisors (500186088566).

516321123616 is a wasteful number, since it uses less digits than its factorization.

516321123616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16135035123 (or 16135035115 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

Subtracting 516321123616 from its reverse (616321123615), we obtain a palindrome (99999999999).

The spelling of 516321123616 in words is "five hundred sixteen billion, three hundred twenty-one million, one hundred twenty-three thousand, six hundred sixteen".