866763317442385 has 32 divisors (see below), whose sum is σ = 1135303502336640. Its totient is φ = 630022525440000.

The previous prime is 866763317442247. The next prime is 866763317442403. The reversal of 866763317442385 is 583244713367668.

866763317442385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 866763317442385 - 2⁹ = 866763317441873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1423445571 + ... + 1424054359.

It is an arithmetic number, because the mean of its divisors is an integer number (35478234448020).

Almost surely, 2^{866763317442385} is an apocalyptic number.

It is an amenable number.

866763317442385 is a deficient number, since it is larger than the sum of its proper divisors (268540184894255).

866763317442385 is a wasteful number, since it uses less digits than its factorization.

866763317442385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623169.

The product of its digits is 2926264320, while the sum is 73.

The spelling of 866763317442385 in words is "eight hundred sixty-six trillion, seven hundred sixty-three billion, three hundred seventeen million, four hundred forty-two thousand, three hundred eighty-five".