68400174999 has 12 divisors (see below), whose sum is σ = 98217981176. Its totient is φ = 42091410288.

The previous prime is 68400174989. The next prime is 68400175003. The reversal of 68400174999 is 99947100486.

It is not a de Polignac number, because 68400174999 - 2²⁴ = 68383397783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68400174989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1612342 + ... + 1654220.

Almost surely, 2^68400174999 is an apocalyptic number.

68400174999 is a deficient number, since it is larger than the sum of its proper divisors (29817806177).

68400174999 is an frugal number, since it uses more digits than its factorization.

68400174999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83774 (or 41895 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 68400174999 in words is "sixty-eight billion, four hundred million, one hundred seventy-four thousand, nine hundred ninety-nine".