68022992791872 has 336 divisors, whose sum is σ = 200125093588992. Its totient is φ = 22080544404480.

The previous prime is 68022992791867. The next prime is 68022992791903. The reversal of 68022992791872 is 27819729922086.

68022992791872 is a `hidden beast` number, since 68 + 0 + 2 + 299 + 279 + 1 + 8 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 68022992791872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6315377847 + ... + 6315388617.

Almost surely, 2^{68022992791872} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68022992791872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100062546794496).

68022992791872 is an abundant number, since it is smaller than the sum of its proper divisors (132102100797120).

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

68022992791872 is a wasteful number, since it uses less digits than its factorization.

68022992791872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11986 (or 11973 counting only the distinct ones).

The product of its (nonzero) digits is 219469824, while the sum is 72.

The spelling of 68022992791872 in words is "sixty-eight trillion, twenty-two billion, nine hundred ninety-two million, seven hundred ninety-one thousand, eight hundred seventy-two".