866786005668682 has 32 divisors (see below), whose sum is σ = 1419842249809920. Its totient is φ = 393586692833520.

The previous prime is 866786005668679. The next prime is 866786005668701. The reversal of 866786005668682 is 286866500687668.

It is a junction number, because it is equal to n+sod(n) for n = 866786005668596 and 866786005668605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438024493 + ... + 439998895.

It is an arithmetic number, because the mean of its divisors is an integer number (44370070306560).

Almost surely, 2^{866786005668682} is an apocalyptic number.

866786005668682 is a deficient number, since it is larger than the sum of its proper divisors (553056244141238).

866786005668682 is a wasteful number, since it uses less digits than its factorization.

866786005668682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995018.

The product of its (nonzero) digits is 13377208320, while the sum is 82.

The spelling of 866786005668682 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, five million, six hundred sixty-eight thousand, six hundred eighty-two".