99901836169 has 2 divisors, whose sum is σ = 99901836170. Its totient is φ = 99901836168.

The previous prime is 99901836121. The next prime is 99901836173. The reversal of 99901836169 is 96163810999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82900805625 + 17001030544 = 287925^2 + 130388^2 .

It is a cyclic number.

It is not a de Polignac number, because 99901836169 - 2¹⁵ = 99901803401 is a prime.

It is a super-2 number, since 2×99901836169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99905836169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49950918084 + 49950918085.

It is an arithmetic number, because the mean of its divisors is an integer number (49950918085).

Almost surely, 2^99901836169 is an apocalyptic number.

It is an amenable number.

99901836169 is a deficient number, since it is larger than the sum of its proper divisors (1).

99901836169 is an equidigital number, since it uses as much as digits as its factorization.

99901836169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5668704, while the sum is 61.

The spelling of 99901836169 in words is "ninety-nine billion, nine hundred one million, eight hundred thirty-six thousand, one hundred sixty-nine".