68769323820 has 72 divisors (see below), whose sum is σ = 209681218656. Its totient is φ = 18243459072.

The previous prime is 68769323809. The next prime is 68769323851. The reversal of 68769323820 is 2832396786.

It is a happy number.

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, 955032 + ... + 1024511.

It is an arithmetic number, because the mean of its divisors is an integer number (2912239148).

Almost surely, 2^68769323820 is an apocalyptic number.

68769323820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68769323820 is an abundant number, since it is smaller than the sum of its proper divisors (140911894836).

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

68769323820 is a wasteful number, since it uses less digits than its factorization.

68769323820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979751 (or 1979746 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 68769323820 in words is "sixty-eight billion, seven hundred sixty-nine million, three hundred twenty-three thousand, eight hundred twenty".