68741638672 has 20 divisors (see below), whose sum is σ = 152213628736. Its totient is φ = 29460702240.

The previous prime is 68741638663. The next prime is 68741638681. The reversal of 68741638672 is 27683614786.

It is an interprime number because it is at equal distance from previous prime (68741638663) and next prime (68741638681).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306882204 + ... + 306882427.

Almost surely, 2^68741638672 is an apocalyptic number.

It is an amenable number.

68741638672 is an abundant number, since it is smaller than the sum of its proper divisors (83471990064).

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

68741638672 is a wasteful number, since it uses less digits than its factorization.

68741638672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613764646 (or 613764640 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 58.

The spelling of 68741638672 in words is "sixty-eight billion, seven hundred forty-one million, six hundred thirty-eight thousand, six hundred seventy-two".