866860118174071 has 48 divisors (see below), whose sum is σ = 1064485475131680. Its totient is φ = 702829461600000.

The previous prime is 866860118174053. The next prime is 866860118174173. The reversal of 866860118174071 is 170471811068668.

It is not a de Polignac number, because 866860118174071 - 2²⁹ = 866859581303159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866860118173994 and 866860118174012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866860118174021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1835461 + ... + 41678401.

It is an arithmetic number, because the mean of its divisors is an integer number (22176780731910).

Almost surely, 2^{866860118174071} is an apocalyptic number.

866860118174071 is a deficient number, since it is larger than the sum of its proper divisors (197625356957609).

866860118174071 is a wasteful number, since it uses less digits than its factorization.

866860118174071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39843296 (or 39843289 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 64.

The spelling of 866860118174071 in words is "eight hundred sixty-six trillion, eight hundred sixty billion, one hundred eighteen million, one hundred seventy-four thousand, seventy-one".