866827581460127 has 16 divisors (see below), whose sum is σ = 1025088572977920. Its totient is φ = 717562001040192.

The previous prime is 866827581460021. The next prime is 866827581460151. The reversal of 866827581460127 is 721064185728668.

It is not a de Polignac number, because 866827581460127 - 2²² = 866827577265823 is a prime.

It is a super-2 number, since 2×866827581460127² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866827581460927) 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, 16178770133 + ... + 16178823710.

It is an arithmetic number, because the mean of its divisors is an integer number (64068035811120).

Almost surely, 2^{866827581460127} is an apocalyptic number.

866827581460127 is a deficient number, since it is larger than the sum of its proper divisors (158260991517793).

866827581460127 is a wasteful number, since it uses less digits than its factorization.

866827581460127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32357593982.

The product of its (nonzero) digits is 433520640, while the sum is 71.

The spelling of 866827581460127 in words is "eight hundred sixty-six trillion, eight hundred twenty-seven billion, five hundred eighty-one million, four hundred sixty thousand, one hundred twenty-seven".