99665980329259 has 2 divisors, whose sum is σ = 99665980329260. Its totient is φ = 99665980329258.

The previous prime is 99665980329173. The next prime is 99665980329313. The reversal of 99665980329259 is 95292308956699.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (95292308956699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99665980329259 - 2²⁵ = 99665946774827 is a prime.

It is not a weakly prime, because it can be changed into another prime (99665980329659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49832990164629 + 49832990164630.

It is an arithmetic number, because the mean of its divisors is an integer number (49832990164630).

Almost surely, 2^{99665980329259} is an apocalyptic number.

99665980329259 is a deficient number, since it is larger than the sum of its proper divisors (1).

99665980329259 is an equidigital number, since it uses as much as digits as its factorization.

99665980329259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5101833600, while the sum is 82.

The spelling of 99665980329259 in words is "ninety-nine trillion, six hundred sixty-five billion, nine hundred eighty million, three hundred twenty-nine thousand, two hundred fifty-nine".