680026042079 has 4 divisors (see below), whose sum is σ = 720027573984. Its totient is φ = 640024510176.

The previous prime is 680026042043. The next prime is 680026042093. The reversal of 680026042079 is 970240620086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 680026042079 - 2²⁴ = 680009264863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680026042039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20000765927 + ... + 20000765960.

It is an arithmetic number, because the mean of its divisors is an integer number (180006893496).

Almost surely, 2^680026042079 is an apocalyptic number.

680026042079 is a deficient number, since it is larger than the sum of its proper divisors (40001531905).

680026042079 is a wasteful number, since it uses less digits than its factorization.

680026042079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40001531904.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 680026042079 in words is "six hundred eighty billion, twenty-six million, forty-two thousand, seventy-nine".