312412963994489 has 2 divisors, whose sum is σ = 312412963994490. Its totient is φ = 312412963994488.

The previous prime is 312412963994437. The next prime is 312412963994561. The reversal of 312412963994489 is 984499369214213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250730915215225 + 61682048779264 = 15834485^2 + 7853792^2 .

It is a cyclic number.

It is not a de Polignac number, because 312412963994489 - 2⁸ = 312412963994233 is a prime.

It is a super-2 number, since 2×312412963994489² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312412963996489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156206481997244 + 156206481997245.

It is an arithmetic number, because the mean of its divisors is an integer number (156206481997245).

Almost surely, 2^{312412963994489} is an apocalyptic number.

It is an amenable number.

312412963994489 is a deficient number, since it is larger than the sum of its proper divisors (1).

312412963994489 is an equidigital number, since it uses as much as digits as its factorization.

312412963994489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725594112, while the sum is 74.

The spelling of 312412963994489 in words is "three hundred twelve trillion, four hundred twelve billion, nine hundred sixty-three million, nine hundred ninety-four thousand, four hundred eighty-nine".