516844360831 has 4 divisors (see below), whose sum is σ = 534666580200. Its totient is φ = 499022141464.

The previous prime is 516844360817. The next prime is 516844360841. The reversal of 516844360831 is 138063448615.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 516844360831 - 2²³ = 516835972223 is a prime.

It is a super-2 number, since 2×516844360831² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516844360841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8911109641 + ... + 8911109698.

It is an arithmetic number, because the mean of its divisors is an integer number (133666645050).

Almost surely, 2^516844360831 is an apocalyptic number.

516844360831 is a deficient number, since it is larger than the sum of its proper divisors (17822219369).

516844360831 is a wasteful number, since it uses less digits than its factorization.

516844360831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17822219368.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 516844360831 in words is "five hundred sixteen billion, eight hundred forty-four million, three hundred sixty thousand, eight hundred thirty-one".