68746674128 has 80 divisors (see below), whose sum is σ = 146401344000. Its totient is φ = 31013523840.

The previous prime is 68746674097. The next prime is 68746674137. The reversal of 68746674128 is 82147664786.

It is a super-2 number, since 2×68746674128² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18869075 + ... + 18872717.

It is an arithmetic number, because the mean of its divisors is an integer number (1830016800).

Almost surely, 2^68746674128 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 68746674128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73200672000).

68746674128 is an abundant number, since it is smaller than the sum of its proper divisors (77654669872).

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

68746674128 is a wasteful number, since it uses less digits than its factorization.

68746674128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440 (or 4434 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 59.

The spelling of 68746674128 in words is "sixty-eight billion, seven hundred forty-six million, six hundred seventy-four thousand, one hundred twenty-eight".