68893182721 has 8 divisors (see below), whose sum is σ = 75158100000. Its totient is φ = 62628582240.

The previous prime is 68893182643. The next prime is 68893182749. The reversal of 68893182721 is 12728139886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68893182721 - 2⁷ = 68893182593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68893182751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797670 + ... + 879808.

It is an arithmetic number, because the mean of its divisors is an integer number (9394762500).

Almost surely, 2^68893182721 is an apocalyptic number.

It is an amenable number.

68893182721 is a deficient number, since it is larger than the sum of its proper divisors (6264917279).

68893182721 is a wasteful number, since it uses less digits than its factorization.

68893182721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158399.

The product of its digits is 2322432, while the sum is 55.

The spelling of 68893182721 in words is "sixty-eight billion, eight hundred ninety-three million, one hundred eighty-two thousand, seven hundred twenty-one".