168673430655 has 24 divisors (see below), whose sum is σ = 302448912480. Its totient is φ = 86857122240.

The previous prime is 168673430641. The next prime is 168673430711. The reversal of 168673430655 is 556034376861.

168673430655 is a `hidden beast` number, since 1 + 6 + 86 + 73 + 430 + 65 + 5 = 666.

It is not a de Polignac number, because 168673430655 - 2²⁰ = 168672382079 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64624531 + ... + 64627140.

It is an arithmetic number, because the mean of its divisors is an integer number (12602038020).

Almost surely, 2^168673430655 is an apocalyptic number.

168673430655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

168673430655 is a deficient number, since it is larger than the sum of its proper divisors (133775481825).

168673430655 is a wasteful number, since it uses less digits than its factorization.

168673430655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129251711 (or 129251708 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 168673430655 in words is "one hundred sixty-eight billion, six hundred seventy-three million, four hundred thirty thousand, six hundred fifty-five".