866764123089 has 8 divisors (see below), whose sum is σ = 1156484180160. Its totient is φ = 577443407376.

The previous prime is 866764123061. The next prime is 866764123117. The reversal of 866764123089 is 980321467668.

It is an interprime number because it is at equal distance from previous prime (866764123061) and next prime (866764123117).

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

It is not a de Polignac number, because 866764123089 - 2²⁴ = 866747345873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (866764193089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99830274 + ... + 99838955.

It is an arithmetic number, because the mean of its divisors is an integer number (144560522520).

Almost surely, 2^866764123089 is an apocalyptic number.

It is an amenable number.

866764123089 is a deficient number, since it is larger than the sum of its proper divisors (289720057071).

866764123089 is a wasteful number, since it uses less digits than its factorization.

866764123089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199670679.

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 866764123089 in words is "eight hundred sixty-six billion, seven hundred sixty-four million, one hundred twenty-three thousand, eighty-nine".