866182338635656 has 16 divisors (see below), whose sum is σ = 1856105011362240. Its totient is φ = 371221002272400.

The previous prime is 866182338635533. The next prime is 866182338635659. The reversal of 866182338635656 is 656536833281668.

866182338635656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (866182338635659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7733770880620 + ... + 7733770880731.

It is an arithmetic number, because the mean of its divisors is an integer number (116006563210140).

Almost surely, 2^{866182338635656} is an apocalyptic number.

It is an amenable number.

866182338635656 is an abundant number, since it is smaller than the sum of its proper divisors (989922672726584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866182338635656 is a wasteful number, since it uses less digits than its factorization.

866182338635656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15467541761364 (or 15467541761360 counting only the distinct ones).

The product of its digits is 5374771200, while the sum is 76.

The spelling of 866182338635656 in words is "eight hundred sixty-six trillion, one hundred eighty-two billion, three hundred thirty-eight million, six hundred thirty-five thousand, six hundred fifty-six".