404564161097 has 2 divisors, whose sum is σ = 404564161098. Its totient is φ = 404564161096.

The previous prime is 404564161081. The next prime is 404564161159. The reversal of 404564161097 is 790161465404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396271509001 + 8292652096 = 629501^2 + 91064^2 .

It is a cyclic number.

It is not a de Polignac number, because 404564161097 - 2⁴ = 404564161081 is a prime.

It is not a weakly prime, because it can be changed into another prime (404564161697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202282080548 + 202282080549.

It is an arithmetic number, because the mean of its divisors is an integer number (202282080549).

Almost surely, 2^404564161097 is an apocalyptic number.

It is an amenable number.

404564161097 is a deficient number, since it is larger than the sum of its proper divisors (1).

404564161097 is an equidigital number, since it uses as much as digits as its factorization.

404564161097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 404564161097 in words is "four hundred four billion, five hundred sixty-four million, one hundred sixty-one thousand, ninety-seven".