716681545057 has 2 divisors, whose sum is σ = 716681545058. Its totient is φ = 716681545056.

The previous prime is 716681545049. The next prime is 716681545067. The reversal of 716681545057 is 750545186617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 700902165601 + 15779379456 = 837199^2 + 125616^2 .

It is a cyclic number.

It is not a de Polignac number, because 716681545057 - 2³ = 716681545049 is a prime.

It is a super-2 number, since 2×716681545057² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 716681544989 and 716681545007.

It is not a weakly prime, because it can be changed into another prime (716681545067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358340772528 + 358340772529.

It is an arithmetic number, because the mean of its divisors is an integer number (358340772529).

Almost surely, 2^716681545057 is an apocalyptic number.

It is an amenable number.

716681545057 is a deficient number, since it is larger than the sum of its proper divisors (1).

716681545057 is an equidigital number, since it uses as much as digits as its factorization.

716681545057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056000, while the sum is 55.

The spelling of 716681545057 in words is "seven hundred sixteen billion, six hundred eighty-one million, five hundred forty-five thousand, fifty-seven".