68008017868 has 72 divisors (see below), whose sum is σ = 143402361984. Its totient is φ = 28109088000.

The previous prime is 68008017853. The next prime is 68008017893. The reversal of 68008017868 is 86871080086.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1761168 + ... + 1799368.

It is an arithmetic number, because the mean of its divisors is an integer number (1991699472).

Almost surely, 2^68008017868 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 68008017868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71701180992).

68008017868 is an abundant number, since it is smaller than the sum of its proper divisors (75394344116).

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

68008017868 is a wasteful number, since it uses less digits than its factorization.

68008017868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38543 (or 38534 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 68008017868 in words is "sixty-eight billion, eight million, seventeen thousand, eight hundred sixty-eight".