168342805153 has 2 divisors, whose sum is σ = 168342805154. Its totient is φ = 168342805152.

The previous prime is 168342805051. The next prime is 168342805171. The reversal of 168342805153 is 351508243861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162713004129 + 5629801024 = 403377^2 + 75032^2 .

It is an emirp because it is prime and its reverse (351508243861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168342805153 - 2²⁵ = 168309250721 is a prime.

It is not a weakly prime, because it can be changed into another prime (168342805853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84171402576 + 84171402577.

It is an arithmetic number, because the mean of its divisors is an integer number (84171402577).

Almost surely, 2^168342805153 is an apocalyptic number.

It is an amenable number.

168342805153 is a deficient number, since it is larger than the sum of its proper divisors (1).

168342805153 is an equidigital number, since it uses as much as digits as its factorization.

168342805153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 168342805153 in words is "one hundred sixty-eight billion, three hundred forty-two million, eight hundred five thousand, one hundred fifty-three".