68066746872 has 64 divisors (see below), whose sum is σ = 176023756800. Its totient is φ = 21911061120.

The previous prime is 68066746861. The next prime is 68066746877. The reversal of 68066746872 is 27864766086.

68066746872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68066746877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260878 + ... + 451874.

It is an arithmetic number, because the mean of its divisors is an integer number (2750371200).

Almost surely, 2^68066746872 is an apocalyptic number.

68066746872 is a gapful number since it is divisible by the number (62) 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 68066746872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88011878400).

68066746872 is an abundant number, since it is smaller than the sum of its proper divisors (107957009928).

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

68066746872 is a wasteful number, since it uses less digits than its factorization.

68066746872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191516 (or 191512 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 60.

The spelling of 68066746872 in words is "sixty-eight billion, sixty-six million, seven hundred forty-six thousand, eight hundred seventy-two".