99169561273 has 2 divisors, whose sum is σ = 99169561274. Its totient is φ = 99169561272.

The previous prime is 99169561201. The next prime is 99169561277. The reversal of 99169561273 is 37216596199.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88475312704 + 10694248569 = 297448^2 + 103413^2 .

It is a cyclic number.

It is not a de Polignac number, because 99169561273 - 2⁹ = 99169560761 is a prime.

It is not a weakly prime, because it can be changed into another prime (99169561277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49584780636 + 49584780637.

It is an arithmetic number, because the mean of its divisors is an integer number (49584780637).

Almost surely, 2^99169561273 is an apocalyptic number.

It is an amenable number.

99169561273 is a deficient number, since it is larger than the sum of its proper divisors (1).

99169561273 is an equidigital number, since it uses as much as digits as its factorization.

99169561273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5511240, while the sum is 58.

The spelling of 99169561273 in words is "ninety-nine billion, one hundred sixty-nine million, five hundred sixty-one thousand, two hundred seventy-three".