68189726880 has 336 divisors, whose sum is σ = 263499705504. Its totient is φ = 16530531840.

The previous prime is 68189726873. The next prime is 68189726893. The reversal of 68189726880 is 8862798186.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1256467 + ... + 1309613.

It is an arithmetic number, because the mean of its divisors is an integer number (784225314).

Almost surely, 2^68189726880 is an apocalyptic number.

68189726880 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 68189726880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131749852752).

68189726880 is an abundant number, since it is smaller than the sum of its proper divisors (195309978624).

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

68189726880 is a wasteful number, since it uses less digits than its factorization.

68189726880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53191 (or 53168 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 63.

The spelling of 68189726880 in words is "sixty-eight billion, one hundred eighty-nine million, seven hundred twenty-six thousand, eight hundred eighty".