168160354561 has 2 divisors, whose sum is σ = 168160354562. Its totient is φ = 168160354560.

The previous prime is 168160354553. The next prime is 168160354597. The reversal of 168160354561 is 165453061861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165567610000 + 2592744561 = 406900^2 + 50919^2 .

It is a cyclic number.

It is not a de Polignac number, because 168160354561 - 2³ = 168160354553 is a prime.

It is not a weakly prime, because it can be changed into another prime (168160354261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84080177280 + 84080177281.

It is an arithmetic number, because the mean of its divisors is an integer number (84080177281).

Almost surely, 2^168160354561 is an apocalyptic number.

It is an amenable number.

168160354561 is a deficient number, since it is larger than the sum of its proper divisors (1).

168160354561 is an equidigital number, since it uses as much as digits as its factorization.

168160354561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 168160354561 in words is "one hundred sixty-eight billion, one hundred sixty million, three hundred fifty-four thousand, five hundred sixty-one".