168655478699 has 2 divisors, whose sum is σ = 168655478700. Its totient is φ = 168655478698.

The previous prime is 168655478627. The next prime is 168655478707. The reversal of 168655478699 is 996874556861.

It is a strong prime.

It is an emirp because it is prime and its reverse (996874556861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168655478699 - 2¹⁶ = 168655413163 is a prime.

It is not a weakly prime, because it can be changed into another prime (168655478609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84327739349 + 84327739350.

It is an arithmetic number, because the mean of its divisors is an integer number (84327739350).

Almost surely, 2^168655478699 is an apocalyptic number.

168655478699 is a deficient number, since it is larger than the sum of its proper divisors (1).

168655478699 is an equidigital number, since it uses as much as digits as its factorization.

168655478699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 783820800, while the sum is 74.

The spelling of 168655478699 in words is "one hundred sixty-eight billion, six hundred fifty-five million, four hundred seventy-eight thousand, six hundred ninety-nine".