679798886851 has 4 divisors (see below), whose sum is σ = 776913013552. Its totient is φ = 582684760152.

The previous prime is 679798886803. The next prime is 679798886891. The reversal of 679798886851 is 158688897976.

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 679798886851 - 2¹¹ = 679798884803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679798886891) 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, 48557063340 + ... + 48557063353.

It is an arithmetic number, because the mean of its divisors is an integer number (194228253388).

Almost surely, 2^679798886851 is an apocalyptic number.

679798886851 is a deficient number, since it is larger than the sum of its proper divisors (97114126701).

679798886851 is an equidigital number, since it uses as much as digits as its factorization.

679798886851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97114126700.

The product of its digits is 2926264320, while the sum is 82.

The spelling of 679798886851 in words is "six hundred seventy-nine billion, seven hundred ninety-eight million, eight hundred eighty-six thousand, eight hundred fifty-one".