516937359817 has 4 divisors (see below), whose sum is σ = 516940837780. Its totient is φ = 516933881856.

The previous prime is 516937359811. The next prime is 516937359833. The reversal of 516937359817 is 718953739615.

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

It can be written as a sum of positive squares in 2 ways, for example, as 287798987961 + 229138371856 = 536469^2 + 478684^2 .

It is a cyclic number.

It is not a de Polignac number, because 516937359817 - 2⁷ = 516937359689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516937359811) 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, 1505592 + ... + 1816777.

It is an arithmetic number, because the mean of its divisors is an integer number (129235209445).

Almost surely, 2^516937359817 is an apocalyptic number.

It is an amenable number.

516937359817 is a deficient number, since it is larger than the sum of its proper divisors (3477963).

516937359817 is a wasteful number, since it uses less digits than its factorization.

516937359817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477962.

The product of its digits is 42865200, while the sum is 64.

The spelling of 516937359817 in words is "five hundred sixteen billion, nine hundred thirty-seven million, three hundred fifty-nine thousand, eight hundred seventeen".