866831441453857 has 8 divisors (see below), whose sum is σ = 946761396678720. Its totient is φ = 787089335714160.

The previous prime is 866831441453849. The next prime is 866831441453863. The reversal of 866831441453857 is 758354144138668.

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

It is a cyclic number.

It is not a de Polignac number, because 866831441453857 - 2³ = 866831441453849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 866831441453857.

It is not an unprimeable number, because it can be changed into a prime (866831441253857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46962361638 + ... + 46962380095.

It is an arithmetic number, because the mean of its divisors is an integer number (118345174584840).

Almost surely, 2^{866831441453857} is an apocalyptic number.

It is an amenable number.

866831441453857 is a deficient number, since it is larger than the sum of its proper divisors (79929955224863).

866831441453857 is a wasteful number, since it uses less digits than its factorization.

866831441453857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93924742583.

The product of its digits is 1857945600, while the sum is 73.

The spelling of 866831441453857 in words is "eight hundred sixty-six trillion, eight hundred thirty-one billion, four hundred forty-one million, four hundred fifty-three thousand, eight hundred fifty-seven".