68978644122 has 64 divisors (see below), whose sum is σ = 142447878144. Its totient is φ = 22255845120.

The previous prime is 68978644087. The next prime is 68978644181. The reversal of 68978644122 is 22144687986.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37671747 + ... + 37673577.

It is an arithmetic number, because the mean of its divisors is an integer number (2225748096).

Almost surely, 2^68978644122 is an apocalyptic number.

68978644122 is an abundant number, since it is smaller than the sum of its proper divisors (73469234022).

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

68978644122 is a wasteful number, since it uses less digits than its factorization.

68978644122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283.

The product of its digits is 9289728, while the sum is 57.

The spelling of 68978644122 in words is "sixty-eight billion, nine hundred seventy-eight million, six hundred forty-four thousand, one hundred twenty-two".