865647047222 has 4 divisors (see below), whose sum is σ = 1298470570836. Its totient is φ = 432823523610.

The previous prime is 865647047189. The next prime is 865647047273. The reversal of 865647047222 is 222740746568.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 216411761804 + ... + 216411761807.

It is an arithmetic number, because the mean of its divisors is an integer number (324617642709).

Almost surely, 2^865647047222 is an apocalyptic number.

865647047222 is a deficient number, since it is larger than the sum of its proper divisors (432823523614).

865647047222 is a wasteful number, since it uses less digits than its factorization.

865647047222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432823523613.

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 865647047222 in words is "eight hundred sixty-five billion, six hundred forty-seven million, forty-seven thousand, two hundred twenty-two".