866802634333844 has 48 divisors (see below), whose sum is σ = 1729689370920000. Its totient is φ = 376528282707456.

The previous prime is 866802634333789. The next prime is 866802634333871. The reversal of 866802634333844 is 448333436208668.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264009587 + ... + 267272645.

It is an arithmetic number, because the mean of its divisors is an integer number (36035195227500).

Almost surely, 2^{866802634333844} is an apocalyptic number.

It is an amenable number.

866802634333844 is a deficient number, since it is larger than the sum of its proper divisors (862886736586156).

866802634333844 is a wasteful number, since it uses less digits than its factorization.

866802634333844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3563592 (or 3563590 counting only the distinct ones).

The product of its (nonzero) digits is 1146617856, while the sum is 68.

The spelling of 866802634333844 in words is "eight hundred sixty-six trillion, eight hundred two billion, six hundred thirty-four million, three hundred thirty-three thousand, eight hundred forty-four".