68181618176 has 80 divisors (see below), whose sum is σ = 157070241504. Its totient is φ = 28961931264.

The previous prime is 68181618101. The next prime is 68181618179. The reversal of 68181618176 is 67181618186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68181618179) 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, 320816 + ... + 489168.

Almost surely, 2^68181618176 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 68181618176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78535120752).

68181618176 is an abundant number, since it is smaller than the sum of its proper divisors (88888623328).

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

68181618176 is a wasteful number, since it uses less digits than its factorization.

68181618176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168491 (or 168475 counting only the distinct ones).

The product of its digits is 774144, while the sum is 53.

The spelling of 68181618176 in words is "sixty-eight billion, one hundred eighty-one million, six hundred eighteen thousand, one hundred seventy-six".