866982643632 has 60 divisors (see below), whose sum is σ = 2772968299920. Its totient is φ = 247709326464.

The previous prime is 866982643613. The next prime is 866982643679. The reversal of 866982643632 is 236346289668.

866982643632 is a `hidden beast` number, since 8 + 6 + 6 + 9 + 8 + 264 + 363 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 866982643632.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430049907 + ... + 430051922.

It is an arithmetic number, because the mean of its divisors is an integer number (46216138332).

Almost surely, 2^866982643632 is an apocalyptic number.

It is an amenable number.

866982643632 is an abundant number, since it is smaller than the sum of its proper divisors (1905985656288).

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

866982643632 is a wasteful number, since it uses less digits than its factorization.

866982643632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860101850 (or 860101841 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 63.

The spelling of 866982643632 in words is "eight hundred sixty-six billion, nine hundred eighty-two million, six hundred forty-three thousand, six hundred thirty-two".