866468821656338 has 8 divisors (see below), whose sum is σ = 1299720765226800. Its totient is φ = 433228566580740.

The previous prime is 866468821656331. The next prime is 866468821656353. The reversal of 866468821656338 is 833656128864668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (866468821656331) 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, 2921938388 + ... + 2922234911.

It is an arithmetic number, because the mean of its divisors is an integer number (162465095653350).

Almost surely, 2^{866468821656338} is an apocalyptic number.

866468821656338 is a deficient number, since it is larger than the sum of its proper divisors (433251943570462).

866468821656338 is a wasteful number, since it uses less digits than its factorization.

866468821656338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844247432.

The product of its digits is 11466178560, while the sum is 80.

The spelling of 866468821656338 in words is "eight hundred sixty-six trillion, four hundred sixty-eight billion, eight hundred twenty-one million, six hundred fifty-six thousand, three hundred thirty-eight".