516631564747 has 4 divisors (see below), whose sum is σ = 534446446320. Its totient is φ = 498816683176.

The previous prime is 516631564721. The next prime is 516631564751. The reversal of 516631564747 is 747465136615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516631564747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516631564147) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 8907440743 + ... + 8907440800.

It is an arithmetic number, because the mean of its divisors is an integer number (133611611580).

Almost surely, 2^516631564747 is an apocalyptic number.

516631564747 is a deficient number, since it is larger than the sum of its proper divisors (17814881573).

516631564747 is a wasteful number, since it uses less digits than its factorization.

516631564747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17814881572.

The product of its digits is 12700800, while the sum is 55.

The spelling of 516631564747 in words is "five hundred sixteen billion, six hundred thirty-one million, five hundred sixty-four thousand, seven hundred forty-seven".