77960594317 has 2 divisors, whose sum is σ = 77960594318. Its totient is φ = 77960594316.

The previous prime is 77960594291. The next prime is 77960594333. The reversal of 77960594317 is 71349506977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76482114916 + 1478479401 = 276554^2 + 38451^2 .

It is a cyclic number.

It is not a de Polignac number, because 77960594317 - 2⁷ = 77960594189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77960594017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38980297158 + 38980297159.

It is an arithmetic number, because the mean of its divisors is an integer number (38980297159).

Almost surely, 2^77960594317 is an apocalyptic number.

It is an amenable number.

77960594317 is a deficient number, since it is larger than the sum of its proper divisors (1).

77960594317 is an equidigital number, since it uses as much as digits as its factorization.

77960594317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10001880, while the sum is 58.

The spelling of 77960594317 in words is "seventy-seven billion, nine hundred sixty million, five hundred ninety-four thousand, three hundred seventeen".