868743893522 has 6 divisors (see below), whose sum is σ = 1303117817493. Its totient is φ = 434371287692.

The previous prime is 868743893471. The next prime is 868743893533. The reversal of 868743893522 is 225398347868.

It can be written as a sum of positive squares in 2 ways, for example, as 782501237281 + 86242656241 = 884591^2 + 293671^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=659069.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 988604 + ... + 1647672.

Almost surely, 2^868743893522 is an apocalyptic number.

868743893522 is a deficient number, since it is larger than the sum of its proper divisors (434373923971).

868743893522 is an frugal number, since it uses more digits than its factorization.

868743893522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318140 (or 659071 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 65.

The spelling of 868743893522 in words is "eight hundred sixty-eight billion, seven hundred forty-three million, eight hundred ninety-three thousand, five hundred twenty-two".