168703516697 has 2 divisors, whose sum is σ = 168703516698. Its totient is φ = 168703516696.

The previous prime is 168703516651. The next prime is 168703516703. The reversal of 168703516697 is 796615307861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165841159696 + 2862357001 = 407236^2 + 53501^2 .

It is an emirp because it is prime and its reverse (796615307861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168703516697 - 2⁶ = 168703516633 is a prime.

It is not a weakly prime, because it can be changed into another prime (168703516637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84351758348 + 84351758349.

It is an arithmetic number, because the mean of its divisors is an integer number (84351758349).

Almost surely, 2^168703516697 is an apocalyptic number.

It is an amenable number.

168703516697 is a deficient number, since it is larger than the sum of its proper divisors (1).

168703516697 is an equidigital number, since it uses as much as digits as its factorization.

168703516697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 168703516697 in words is "one hundred sixty-eight billion, seven hundred three million, five hundred sixteen thousand, six hundred ninety-seven".