679842408959 has 16 divisors (see below), whose sum is σ = 807337537536. Its totient is φ = 560189952000.

The previous prime is 679842408899. The next prime is 679842408979. The reversal of 679842408959 is 959804248976.

It is not a de Polignac number, because 679842408959 - 2¹⁶ = 679842343423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679842408892 and 679842408901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679842408979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10341122 + ... + 10406655.

It is an arithmetic number, because the mean of its divisors is an integer number (50458596096).

Almost surely, 2^679842408959 is an apocalyptic number.

679842408959 is a deficient number, since it is larger than the sum of its proper divisors (127495128577).

679842408959 is a wasteful number, since it uses less digits than its factorization.

679842408959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20747966.

The product of its (nonzero) digits is 313528320, while the sum is 71.

It can be divided in two parts, 679842 and 408959, that added together give a palindrome (1088801).

The spelling of 679842408959 in words is "six hundred seventy-nine billion, eight hundred forty-two million, four hundred eight thousand, nine hundred fifty-nine".