68423809209 has 8 divisors (see below), whose sum is σ = 104264852160. Its totient is φ = 39099319536.

The previous prime is 68423809189. The next prime is 68423809219. The reversal of 68423809209 is 90290832486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68423809209 - 2⁷ = 68423809081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68423809219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1629138294 + ... + 1629138335.

It is an arithmetic number, because the mean of its divisors is an integer number (13033106520).

Almost surely, 2^68423809209 is an apocalyptic number.

It is an amenable number.

68423809209 is a deficient number, since it is larger than the sum of its proper divisors (35841042951).

68423809209 is a wasteful number, since it uses less digits than its factorization.

68423809209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258276639.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 68423809209 in words is "sixty-eight billion, four hundred twenty-three million, eight hundred nine thousand, two hundred nine".