866842382687084 has 24 divisors (see below), whose sum is σ = 1525750527999600. Its totient is φ = 430913685760064.

The previous prime is 866842382687027. The next prime is 866842382687093. The reversal of 866842382687084 is 480786283248668.

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, 138220067 + ... + 144355365.

It is an arithmetic number, because the mean of its divisors is an integer number (63572938666650).

Almost surely, 2^{866842382687084} is an apocalyptic number.

It is an amenable number.

866842382687084 is a deficient number, since it is larger than the sum of its proper divisors (658908145312516).

866842382687084 is a wasteful number, since it uses less digits than its factorization.

866842382687084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339649 (or 6339647 counting only the distinct ones).

The product of its (nonzero) digits is 9512681472, while the sum is 80.

The spelling of 866842382687084 in words is "eight hundred sixty-six trillion, eight hundred forty-two billion, three hundred eighty-two million, six hundred eighty-seven thousand, eighty-four".