868856688385 has 16 divisors (see below), whose sum is σ = 1193661735552. Its totient is φ = 594744019200.

The previous prime is 868856688361. The next prime is 868856688407. The reversal of 868856688385 is 583886658868.

868856688385 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 868856688385 - 2¹³ = 868856680193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21717736 + ... + 21757705.

It is an arithmetic number, because the mean of its divisors is an integer number (74603858472).

Almost surely, 2^868856688385 is an apocalyptic number.

It is an amenable number.

868856688385 is a deficient number, since it is larger than the sum of its proper divisors (324805047167).

868856688385 is a wasteful number, since it uses less digits than its factorization.

868856688385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43476024.

The product of its digits is 4246732800, while the sum is 79.

The spelling of 868856688385 in words is "eight hundred sixty-eight billion, eight hundred fifty-six million, six hundred eighty-eight thousand, three hundred eighty-five".