68123853213808 has 90 divisors (see below), whose sum is σ = 151727920078056. Its totient is φ = 29026167806592.

The previous prime is 68123853213743. The next prime is 68123853213811. The reversal of 68123853213808 is 80831235832186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15635493166 + ... + 15635497522.

Almost surely, 2^{68123853213808} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68123853213808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75863960039028).

68123853213808 is an abundant number, since it is smaller than the sum of its proper divisors (83604066864248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68123853213808 is an frugal number, since it uses more digits than its factorization.

68123853213808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9087 (or 4545 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 68123853213808 in words is "sixty-eight trillion, one hundred twenty-three billion, eight hundred fifty-three million, two hundred thirteen thousand, eight hundred eight".