26680375689 has 8 divisors (see below), whose sum is σ = 38807819232. Its totient is φ = 16169924640.

The previous prime is 26680375651. The next prime is 26680375693. The reversal of 26680375689 is 98657308662.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-26680375689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26680375639) 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, 404248084 + ... + 404248149.

It is an arithmetic number, because the mean of its divisors is an integer number (4850977404).

Almost surely, 2^26680375689 is an apocalyptic number.

It is an amenable number.

26680375689 is a deficient number, since it is larger than the sum of its proper divisors (12127443543).

26680375689 is a wasteful number, since it uses less digits than its factorization.

26680375689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808496247.

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 26680375689 in words is "twenty-six billion, six hundred eighty million, three hundred seventy-five thousand, six hundred eighty-nine".