866764213358384 has 40 divisors (see below), whose sum is σ = 1939790498886288. Its totient is φ = 370808219617280.

The previous prime is 866764213358357. The next prime is 866764213358399. The reversal of 866764213358384 is 483853312467668.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144846957797 + ... + 144846963780.

Almost surely, 2^{866764213358384} is an apocalyptic number.

It is an amenable number.

866764213358384 is an abundant number, since it is smaller than the sum of its proper divisors (1073026285527904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866764213358384 is a wasteful number, since it uses less digits than its factorization.

866764213358384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289693921613 (or 289693921607 counting only the distinct ones).

The product of its digits is 3344302080, while the sum is 74.

The spelling of 866764213358384 in words is "eight hundred sixty-six trillion, seven hundred sixty-four billion, two hundred thirteen million, three hundred fifty-eight thousand, three hundred eighty-four".