90408699763169 has 2 divisors, whose sum is σ = 90408699763170. Its totient is φ = 90408699763168.

The previous prime is 90408699763139. The next prime is 90408699763229. The reversal of 90408699763169 is 96136799680409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53928754704400 + 36479945058769 = 7343620^2 + 6039863^2 .

It is a cyclic number.

It is not a de Polignac number, because 90408699763169 - 2¹⁶ = 90408699697633 is a prime.

It is a super-2 number, since 2×90408699763169² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90408699763169.

It is not a weakly prime, because it can be changed into another prime (90408699763139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45204349881584 + 45204349881585.

It is an arithmetic number, because the mean of its divisors is an integer number (45204349881585).

Almost surely, 2^{90408699763169} is an apocalyptic number.

It is an amenable number.

90408699763169 is a deficient number, since it is larger than the sum of its proper divisors (1).

90408699763169 is an equidigital number, since it uses as much as digits as its factorization.

90408699763169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952342272, while the sum is 77.

The spelling of 90408699763169 in words is "ninety trillion, four hundred eight billion, six hundred ninety-nine million, seven hundred sixty-three thousand, one hundred sixty-nine".