68165369117 has 2 divisors, whose sum is σ = 68165369118. Its totient is φ = 68165369116.

The previous prime is 68165369093. The next prime is 68165369147. The reversal of 68165369117 is 71196356186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35526972196 + 32638396921 = 188486^2 + 180661^2 .

It is a cyclic number.

It is not a de Polignac number, because 68165369117 - 2⁶ = 68165369053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68165369147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34082684558 + 34082684559.

It is an arithmetic number, because the mean of its divisors is an integer number (34082684559).

Almost surely, 2^68165369117 is an apocalyptic number.

It is an amenable number.

68165369117 is a deficient number, since it is larger than the sum of its proper divisors (1).

68165369117 is an equidigital number, since it uses as much as digits as its factorization.

68165369117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 53.

The spelling of 68165369117 in words is "sixty-eight billion, one hundred sixty-five million, three hundred sixty-nine thousand, one hundred seventeen".