68873493888 has 160 divisors (see below), whose sum is σ = 205817413560. Its totient is φ = 22956991488.

The previous prime is 68873493883. The next prime is 68873493901. The reversal of 68873493888 is 88839437886.

68873493888 is a `hidden beast` number, since 68 + 8 + 73 + 493 + 8 + 8 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68873493883) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2505756 + ... + 2533092.

Almost surely, 2^68873493888 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 68873493888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102908706780).

68873493888 is an abundant number, since it is smaller than the sum of its proper divisors (136943919672).

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

68873493888 is an frugal number, since it uses more digits than its factorization.

68873493888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27378 (or 27342 counting only the distinct ones).

The product of its digits is 445906944, while the sum is 72.

The spelling of 68873493888 in words is "sixty-eight billion, eight hundred seventy-three million, four hundred ninety-three thousand, eight hundred eighty-eight".