729835265872 has 20 divisors (see below), whose sum is σ = 1452273553876. Its totient is φ = 355054993920.

The previous prime is 729835265869. The next prime is 729835265891. The reversal of 729835265872 is 278562538927.

It can be written as a sum of positive squares in 2 ways, for example, as 658623141136 + 71212124736 = 811556^2 + 266856^2 .

It is a congruent 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, 616414329 + ... + 616415512.

Almost surely, 2^729835265872 is an apocalyptic number.

It is an amenable number.

729835265872 is a deficient number, since it is larger than the sum of its proper divisors (722438288004).

729835265872 is a wasteful number, since it uses less digits than its factorization.

729835265872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232829886 (or 1232829880 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 64.

The spelling of 729835265872 in words is "seven hundred twenty-nine billion, eight hundred thirty-five million, two hundred sixty-five thousand, eight hundred seventy-two".