68878091880 has 256 divisors, whose sum is σ = 247919616000. Its totient is φ = 16909019136.

The previous prime is 68878091873. The next prime is 68878091897. The reversal of 68878091880 is 8819087886.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5370916 + ... + 5383724.

It is an arithmetic number, because the mean of its divisors is an integer number (968436000).

Almost surely, 2^68878091880 is an apocalyptic number.

68878091880 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 68878091880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123959808000).

68878091880 is an abundant number, since it is smaller than the sum of its proper divisors (179041524120).

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

68878091880 is a wasteful number, since it uses less digits than its factorization.

68878091880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13225 (or 13215 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 63.

The spelling of 68878091880 in words is "sixty-eight billion, eight hundred seventy-eight million, ninety-one thousand, eight hundred eighty".