168806497403 has 2 divisors, whose sum is σ = 168806497404. Its totient is φ = 168806497402.

The previous prime is 168806497357. The next prime is 168806497441. The reversal of 168806497403 is 304794608861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168806497403 - 2⁸ = 168806497147 is a prime.

It is not a weakly prime, because it can be changed into another prime (168806497463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84403248701 + 84403248702.

It is an arithmetic number, because the mean of its divisors is an integer number (84403248702).

Almost surely, 2^168806497403 is an apocalyptic number.

168806497403 is a deficient number, since it is larger than the sum of its proper divisors (1).

168806497403 is an equidigital number, since it uses as much as digits as its factorization.

168806497403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 168806497403 in words is "one hundred sixty-eight billion, eight hundred six million, four hundred ninety-seven thousand, four hundred three".