68820180720 has 160 divisors (see below), whose sum is σ = 223809246720. Its totient is φ = 17469527040.

The previous prime is 68820180701. The next prime is 68820180769. The reversal of 68820180720 is 2708102886.

It is a congruent number.

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, 424527 + ... + 563793.

It is an arithmetic number, because the mean of its divisors is an integer number (1398807792).

Almost surely, 2^68820180720 is an apocalyptic number.

68820180720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68820180720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111904623360).

68820180720 is an abundant number, since it is smaller than the sum of its proper divisors (154989066000).

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

68820180720 is a wasteful number, since it uses less digits than its factorization.

68820180720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139383 (or 139377 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 68820180720 in words is "sixty-eight billion, eight hundred twenty million, one hundred eighty thousand, seven hundred twenty".