679855769811 has 6 divisors (see below), whose sum is σ = 982013889740. Its totient is φ = 453237179868.

The previous prime is 679855769809. The next prime is 679855769821. The reversal of 679855769811 is 118967558976.

679855769811 is a `hidden beast` number, since 6 + 7 + 9 + 8 + 557 + 69 + 8 + 1 + 1 = 666.

It is not a de Polignac number, because 679855769811 - 2¹ = 679855769809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 679855769811.

It is not an unprimeable number, because it can be changed into a prime (679855769821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37769764981 + ... + 37769764998.

Almost surely, 2^679855769811 is an apocalyptic number.

679855769811 is a deficient number, since it is larger than the sum of its proper divisors (302158119929).

679855769811 is a wasteful number, since it uses less digits than its factorization.

679855769811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75539529985 (or 75539529982 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 72.

The spelling of 679855769811 in words is "six hundred seventy-nine billion, eight hundred fifty-five million, seven hundred sixty-nine thousand, eight hundred eleven".