99404825161 has 2 divisors, whose sum is σ = 99404825162. Its totient is φ = 99404825160.

The previous prime is 99404825131. The next prime is 99404825243. The reversal of 99404825161 is 16152840499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66180649536 + 33224175625 = 257256^2 + 182275^2 .

It is a cyclic number.

It is not a de Polignac number, because 99404825161 - 2²⁵ = 99371270729 is a prime.

It is not a weakly prime, because it can be changed into another prime (99404825111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49702412580 + 49702412581.

It is an arithmetic number, because the mean of its divisors is an integer number (49702412581).

Almost surely, 2^99404825161 is an apocalyptic number.

It is an amenable number.

99404825161 is a deficient number, since it is larger than the sum of its proper divisors (1).

99404825161 is an equidigital number, since it uses as much as digits as its factorization.

99404825161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 99404825161 in words is "ninety-nine billion, four hundred four million, eight hundred twenty-five thousand, one hundred sixty-one".