864036645322 has 16 divisors (see below), whose sum is σ = 1309467541320. Its totient is φ = 427558828032.

The previous prime is 864036645281. The next prime is 864036645389. The reversal of 864036645322 is 223546630468.

It can be written as a sum of positive squares in 4 ways, for example, as 479017636321 + 385019009001 = 692111^2 + 620499^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 2688297 + ... + 2992492.

Almost surely, 2^864036645322 is an apocalyptic number.

864036645322 is a deficient number, since it is larger than the sum of its proper divisors (445430895998).

864036645322 is a wasteful number, since it uses less digits than its factorization.

864036645322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681577.

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 864036645322 in words is "eight hundred sixty-four billion, thirty-six million, six hundred forty-five thousand, three hundred twenty-two".