99868892957 has 2 divisors, whose sum is σ = 99868892958. Its totient is φ = 99868892956.

The previous prime is 99868892923. The next prime is 99868893001. The reversal of 99868892957 is 75929886899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55046075161 + 44822817796 = 234619^2 + 211714^2 .

It is an emirp because it is prime and its reverse (75929886899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99868892957 - 2²⁰ = 99867844381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99865892957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49934446478 + 49934446479.

It is an arithmetic number, because the mean of its divisors is an integer number (49934446479).

Almost surely, 2^99868892957 is an apocalyptic number.

It is an amenable number.

99868892957 is a deficient number, since it is larger than the sum of its proper divisors (1).

99868892957 is an equidigital number, since it uses as much as digits as its factorization.

99868892957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1410877440, while the sum is 80.

The spelling of 99868892957 in words is "ninety-nine billion, eight hundred sixty-eight million, eight hundred ninety-two thousand, nine hundred fifty-seven".