168140712997 has 2 divisors, whose sum is σ = 168140712998. Its totient is φ = 168140712996.

The previous prime is 168140712973. The next prime is 168140713003. The reversal of 168140712997 is 799217041861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113174379396 + 54966333601 = 336414^2 + 234449^2 .

It is a cyclic number.

It is not a de Polignac number, because 168140712997 - 2¹¹ = 168140710949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168140512997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84070356498 + 84070356499.

It is an arithmetic number, because the mean of its divisors is an integer number (84070356499).

Almost surely, 2^168140712997 is an apocalyptic number.

It is an amenable number.

168140712997 is a deficient number, since it is larger than the sum of its proper divisors (1).

168140712997 is an equidigital number, since it uses as much as digits as its factorization.

168140712997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 168140712997 in words is "one hundred sixty-eight billion, one hundred forty million, seven hundred twelve thousand, nine hundred ninety-seven".