99965365943 has 2 divisors, whose sum is σ = 99965365944. Its totient is φ = 99965365942.

The previous prime is 99965365921. The next prime is 99965365961. The reversal of 99965365943 is 34956356999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99965365943 - 2²⁰ = 99964317367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99965365963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49982682971 + 49982682972.

It is an arithmetic number, because the mean of its divisors is an integer number (49982682972).

Almost surely, 2^99965365943 is an apocalyptic number.

99965365943 is a deficient number, since it is larger than the sum of its proper divisors (1).

99965365943 is an equidigital number, since it uses as much as digits as its factorization.

99965365943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 212576400, while the sum is 68.

The spelling of 99965365943 in words is "ninety-nine billion, nine hundred sixty-five million, three hundred sixty-five thousand, nine hundred forty-three".