312775662515989 has 2 divisors, whose sum is σ = 312775662515990. Its totient is φ = 312775662515988.

The previous prime is 312775662515977. The next prime is 312775662516001. The reversal of 312775662515989 is 989515266577213.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (312775662515977) and next prime (312775662516001).

It can be written as a sum of positive squares in only one way, i.e., 264628855851889 + 48146806664100 = 16267417^2 + 6938790^2 .

It is a cyclic number.

It is not a de Polignac number, because 312775662515989 - 2²⁹ = 312775125645077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312775662515489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156387831257994 + 156387831257995.

It is an arithmetic number, because the mean of its divisors is an integer number (156387831257995).

Almost surely, 2^{312775662515989} is an apocalyptic number.

It is an amenable number.

312775662515989 is a deficient number, since it is larger than the sum of its proper divisors (1).

312775662515989 is an equidigital number, since it uses as much as digits as its factorization.

312775662515989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608000, while the sum is 76.

The spelling of 312775662515989 in words is "three hundred twelve trillion, seven hundred seventy-five billion, six hundred sixty-two million, five hundred fifteen thousand, nine hundred eighty-nine".