866831232881066 has 8 divisors (see below), whose sum is σ = 1300260498916644. Its totient is φ = 433411066575520.

The previous prime is 866831232881041. The next prime is 866831232881087. The reversal of 866831232881066 is 660188232138668.

It can be written as a sum of positive squares in 2 ways, for example, as 864211771555441 + 2619461325625 = 29397479^2 + 1618475^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 866831232880987 and 866831232881005.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2274694355 + ... + 2275075398.

Almost surely, 2^{866831232881066} is an apocalyptic number.

866831232881066 is a deficient number, since it is larger than the sum of its proper divisors (433429266035578).

866831232881066 is a wasteful number, since it uses less digits than its factorization.

866831232881066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549865016.

The product of its (nonzero) digits is 191102976, while the sum is 68.

The spelling of 866831232881066 in words is "eight hundred sixty-six trillion, eight hundred thirty-one billion, two hundred thirty-two million, eight hundred eighty-one thousand, sixty-six".