679021091189 has 16 divisors (see below), whose sum is σ = 795045283200. Its totient is φ = 567755543040.

The previous prime is 679021091179. The next prime is 679021091209. The reversal of 679021091189 is 981190120976.

It is not a de Polignac number, because 679021091189 - 2¹⁶ = 679021025653 is a prime.

It is a super-2 number, since 2×679021091189² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679021091189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679021091179) 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, 2376962 + ... + 2647260.

It is an arithmetic number, because the mean of its divisors is an integer number (49690330200).

Almost surely, 2^679021091189 is an apocalyptic number.

It is an amenable number.

679021091189 is a deficient number, since it is larger than the sum of its proper divisors (116024192011).

679021091189 is a wasteful number, since it uses less digits than its factorization.

679021091189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279100.

The product of its (nonzero) digits is 489888, while the sum is 53.

The spelling of 679021091189 in words is "six hundred seventy-nine billion, twenty-one million, ninety-one thousand, one hundred eighty-nine".