864745164872 has 16 divisors (see below), whose sum is σ = 1691892714240. Its totient is φ = 413573774416.

The previous prime is 864745164869. The next prime is 864745164883. The reversal of 864745164872 is 278461547468.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2349850808 + ... + 2349851175.

It is an arithmetic number, because the mean of its divisors is an integer number (105743294640).

Almost surely, 2^864745164872 is an apocalyptic number.

It is an amenable number.

864745164872 is a deficient number, since it is larger than the sum of its proper divisors (827147549368).

864745164872 is a wasteful number, since it uses less digits than its factorization.

864745164872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699702012 (or 4699702008 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 62.

The spelling of 864745164872 in words is "eight hundred sixty-four billion, seven hundred forty-five million, one hundred sixty-four thousand, eight hundred seventy-two".