99319323617 has 2 divisors, whose sum is σ = 99319323618. Its totient is φ = 99319323616.

The previous prime is 99319323611. The next prime is 99319323643. The reversal of 99319323617 is 71632391399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93662929936 + 5656393681 = 306044^2 + 75209^2 .

It is a cyclic number.

It is not a de Polignac number, because 99319323617 - 2¹⁰ = 99319322593 is a prime.

It is not a weakly prime, because it can be changed into another prime (99319323611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49659661808 + 49659661809.

It is an arithmetic number, because the mean of its divisors is an integer number (49659661809).

Almost surely, 2^99319323617 is an apocalyptic number.

It is an amenable number.

99319323617 is a deficient number, since it is larger than the sum of its proper divisors (1).

99319323617 is an equidigital number, since it uses as much as digits as its factorization.

99319323617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1653372, while the sum is 53.

The spelling of 99319323617 in words is "ninety-nine billion, three hundred nineteen million, three hundred twenty-three thousand, six hundred seventeen".