516844640587 has 4 divisors (see below), whose sum is σ = 563830517016. Its totient is φ = 469858764160.

The previous prime is 516844640549. The next prime is 516844640639. The reversal of 516844640587 is 785046448615.

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 516844640587 - 2¹⁵ = 516844607819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516844640387) 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, 23492938198 + ... + 23492938219.

It is an arithmetic number, because the mean of its divisors is an integer number (140957629254).

Almost surely, 2^516844640587 is an apocalyptic number.

516844640587 is a deficient number, since it is larger than the sum of its proper divisors (46985876429).

516844640587 is a wasteful number, since it uses less digits than its factorization.

516844640587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46985876428.

The product of its (nonzero) digits is 25804800, while the sum is 58.

The spelling of 516844640587 in words is "five hundred sixteen billion, eight hundred forty-four million, six hundred forty thousand, five hundred eighty-seven".