990717717113 has 2 divisors, whose sum is σ = 990717717114. Its totient is φ = 990717717112.

The previous prime is 990717717097. The next prime is 990717717169. The reversal of 990717717113 is 311717717099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 949470950464 + 41246766649 = 974408^2 + 203093^2 .

It is a cyclic number.

It is not a de Polignac number, because 990717717113 - 2⁴ = 990717717097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (990717747113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495358858556 + 495358858557.

It is an arithmetic number, because the mean of its divisors is an integer number (495358858557).

Almost surely, 2^990717717113 is an apocalyptic number.

It is an amenable number.

990717717113 is a deficient number, since it is larger than the sum of its proper divisors (1).

990717717113 is an equidigital number, since it uses as much as digits as its factorization.

990717717113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583443, while the sum is 53.

The spelling of 990717717113 in words is "nine hundred ninety billion, seven hundred seventeen million, seven hundred seventeen thousand, one hundred thirteen".