679850851515 has 32 divisors (see below), whose sum is σ = 1190233896192. Its totient is φ = 328628784000.

The previous prime is 679850851513. The next prime is 679850851523. The reversal of 679850851515 is 515158058976.

It is not a de Polignac number, because 679850851515 - 2¹ = 679850851513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (679850851513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6169416 + ... + 6278645.

It is an arithmetic number, because the mean of its divisors is an integer number (37194809256).

Almost surely, 2^679850851515 is an apocalyptic number.

679850851515 is a deficient number, since it is larger than the sum of its proper divisors (510383044677).

679850851515 is a wasteful number, since it uses less digits than its factorization.

679850851515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12448411.

The product of its (nonzero) digits is 15120000, while the sum is 60.

The spelling of 679850851515 in words is "six hundred seventy-nine billion, eight hundred fifty million, eight hundred fifty-one thousand, five hundred fifteen".