312775662515977 has 2 divisors, whose sum is σ = 312775662515978. Its totient is φ = 312775662515976.

The previous prime is 312775662515941. The next prime is 312775662515989. The reversal of 312775662515977 is 779515266577213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265491046858816 + 47284615657161 = 16293896^2 + 6876381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312775662515977 is a prime.

It is not a weakly prime, because it can be changed into another prime (312775662545977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156387831257988 + 156387831257989.

It is an arithmetic number, because the mean of its divisors is an integer number (156387831257989).

Almost surely, 2^{312775662515977} is an apocalyptic number.

It is an amenable number.

312775662515977 is a deficient number, since it is larger than the sum of its proper divisors (1).

312775662515977 is an equidigital number, since it uses as much as digits as its factorization.

312775662515977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166886000, while the sum is 73.

The spelling of 312775662515977 in words is "three hundred twelve trillion, seven hundred seventy-five billion, six hundred sixty-two million, five hundred fifteen thousand, nine hundred seventy-seven".