866786517363874 has 16 divisors (see below), whose sum is σ = 1305518361580512. Its totient is φ = 431615477379168.

The previous prime is 866786517363847. The next prime is 866786517363889. The reversal of 866786517363874 is 478363715687668.

866786517363874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×866786517363874² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 866786517363791 and 866786517363800.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435808984 + ... + 437793379.

It is an arithmetic number, because the mean of its divisors is an integer number (81594897598782).

Almost surely, 2^{866786517363874} is an apocalyptic number.

866786517363874 is a deficient number, since it is larger than the sum of its proper divisors (438731844216638).

866786517363874 is a wasteful number, since it uses less digits than its factorization.

866786517363874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873604401.

The product of its digits is 40967700480, while the sum is 85.

The spelling of 866786517363874 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, five hundred seventeen million, three hundred sixty-three thousand, eight hundred seventy-four".