864036645321 has 8 divisors (see below), whose sum is σ = 1152175370560. Its totient is φ = 575961175152.

The previous prime is 864036645281. The next prime is 864036645389. The reversal of 864036645321 is 123546630468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-864036645321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864036646321) by changing a digit.

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, 15781885 + ... + 15836538.

It is an arithmetic number, because the mean of its divisors is an integer number (144021921320).

Almost surely, 2^864036645321 is an apocalyptic number.

It is an amenable number.

864036645321 is a deficient number, since it is larger than the sum of its proper divisors (288138725239).

864036645321 is a wasteful number, since it uses less digits than its factorization.

864036645321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31627535.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 864036645321 in words is "eight hundred sixty-four billion, thirty-six million, six hundred forty-five thousand, three hundred twenty-one".