68899876992 has 128 divisors (see below), whose sum is σ = 203818032000. Its totient is φ = 22913805312.

The previous prime is 68899876979. The next prime is 68899877009. The reversal of 68899876992 is 29967899886.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1494478 + ... + 1539890.

It is an arithmetic number, because the mean of its divisors is an integer number (1592328375).

Almost surely, 2^68899876992 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 68899876992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101909016000).

68899876992 is an abundant number, since it is smaller than the sum of its proper divisors (134918155008).

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

68899876992 is a wasteful number, since it uses less digits than its factorization.

68899876992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45875 (or 45857 counting only the distinct ones).

The product of its digits is 1693052928, while the sum is 81.

The spelling of 68899876992 in words is "sixty-eight billion, eight hundred ninety-nine million, eight hundred seventy-six thousand, nine hundred ninety-two".