516706465445557 has 2 divisors, whose sum is σ = 516706465445558. Its totient is φ = 516706465445556.

The previous prime is 516706465445531. The next prime is 516706465445587. The reversal of 516706465445557 is 755544564607615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516691132567281 + 15332878276 = 22730841^2 + 123826^2 .

It is a cyclic number.

It is not a de Polignac number, because 516706465445557 - 2²⁷ = 516706331227829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516706465445507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258353232722778 + 258353232722779.

It is an arithmetic number, because the mean of its divisors is an integer number (258353232722779).

Almost surely, 2^{516706465445557} is an apocalyptic number.

It is an amenable number.

516706465445557 is a deficient number, since it is larger than the sum of its proper divisors (1).

516706465445557 is an equidigital number, since it uses as much as digits as its factorization.

516706465445557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800000, while the sum is 70.

The spelling of 516706465445557 in words is "five hundred sixteen trillion, seven hundred six billion, four hundred sixty-five million, four hundred forty-five thousand, five hundred fifty-seven".