866800082636859 has 16 divisors (see below), whose sum is σ = 1320839417511680. Its totient is φ = 495313884303840.

The previous prime is 866800082636857. The next prime is 866800082636861. The reversal of 866800082636859 is 958636280008668.

It is an interprime number because it is at equal distance from previous prime (866800082636857) and next prime (866800082636861).

It is not a de Polignac number, because 866800082636859 - 2¹ = 866800082636857 is a prime.

It is a super-3 number, since 3×866800082636859³ (a number of 46 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866800082636857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5789952 + ... + 42037170.

It is an arithmetic number, because the mean of its divisors is an integer number (82552463594480).

Almost surely, 2^{866800082636859} is an apocalyptic number.

866800082636859 is a deficient number, since it is larger than the sum of its proper divisors (454039334874821).

866800082636859 is a wasteful number, since it uses less digits than its factorization.

866800082636859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37385970.

The product of its (nonzero) digits is 1433272320, while the sum is 75.

The spelling of 866800082636859 in words is "eight hundred sixty-six trillion, eight hundred billion, eighty-two million, six hundred thirty-six thousand, eight hundred fifty-nine".