99169561201 has 2 divisors, whose sum is σ = 99169561202. Its totient is φ = 99169561200.

The previous prime is 99169561177. The next prime is 99169561273. The reversal of 99169561201 is 10216596199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98762490225 + 407070976 = 314265^2 + 20176^2 .

It is a cyclic number.

It is not a de Polignac number, because 99169561201 - 2¹⁹ = 99169036913 is a prime.

It is not a weakly prime, because it can be changed into another prime (99169561291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49584780600 + 49584780601.

It is an arithmetic number, because the mean of its divisors is an integer number (49584780601).

Almost surely, 2^99169561201 is an apocalyptic number.

It is an amenable number.

99169561201 is a deficient number, since it is larger than the sum of its proper divisors (1).

99169561201 is an equidigital number, since it uses as much as digits as its factorization.

99169561201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 49.

The spelling of 99169561201 in words is "ninety-nine billion, one hundred sixty-nine million, five hundred sixty-one thousand, two hundred one".