864739634464 has 24 divisors (see below), whose sum is σ = 1748468486268. Its totient is φ = 420684145920.

The previous prime is 864739634419. The next prime is 864739634483. The reversal of 864739634464 is 464436937468.

It can be written as a sum of positive squares in 2 ways, for example, as 807647310864 + 57092323600 = 898692^2 + 238940^2 .

It is a junction number, because it is equal to n+sod(n) for n = 864739634396 and 864739634405.

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, 365176027 + ... + 365178394.

Almost surely, 2^864739634464 is an apocalyptic number.

It is an amenable number.

864739634464 is an abundant number, since it is smaller than the sum of its proper divisors (883728851804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864739634464 is a wasteful number, since it uses less digits than its factorization.

864739634464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730354468 (or 730354460 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 64.

The spelling of 864739634464 in words is "eight hundred sixty-four billion, seven hundred thirty-nine million, six hundred thirty-four thousand, four hundred sixty-four".