90317306977 has 2 divisors, whose sum is σ = 90317306978. Its totient is φ = 90317306976.

The previous prime is 90317306857. The next prime is 90317306983. The reversal of 90317306977 is 77960371309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84566966416 + 5750340561 = 290804^2 + 75831^2 .

It is an emirp because it is prime and its reverse (77960371309) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90317306977 - 2³⁵ = 55957568609 is a prime.

It is not a weakly prime, because it can be changed into another prime (90317303977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45158653488 + 45158653489.

It is an arithmetic number, because the mean of its divisors is an integer number (45158653489).

Almost surely, 2^90317306977 is an apocalyptic number.

It is an amenable number.

90317306977 is a deficient number, since it is larger than the sum of its proper divisors (1).

90317306977 is an equidigital number, since it uses as much as digits as its factorization.

90317306977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500282, while the sum is 52.

The spelling of 90317306977 in words is "ninety billion, three hundred seventeen million, three hundred six thousand, nine hundred seventy-seven".