168208470923137 has 2 divisors, whose sum is σ = 168208470923138. Its totient is φ = 168208470923136.

The previous prime is 168208470923099. The next prime is 168208470923177. The reversal of 168208470923137 is 731329074802861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131881704768576 + 36326766154561 = 11483976^2 + 6027169^2 .

It is a cyclic number.

It is not a de Polignac number, because 168208470923137 - 2¹¹ = 168208470921089 is a prime.

It is not a weakly prime, because it can be changed into another prime (168208470923177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84104235461568 + 84104235461569.

It is an arithmetic number, because the mean of its divisors is an integer number (84104235461569).

Almost surely, 2^{168208470923137} is an apocalyptic number.

It is an amenable number.

168208470923137 is a deficient number, since it is larger than the sum of its proper divisors (1).

168208470923137 is an equidigital number, since it uses as much as digits as its factorization.

168208470923137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24385536, while the sum is 61.

The spelling of 168208470923137 in words is "one hundred sixty-eight trillion, two hundred eight billion, four hundred seventy million, nine hundred twenty-three thousand, one hundred thirty-seven".