729963872665 has 16 divisors (see below), whose sum is σ = 888025970448. Its totient is φ = 575926142976.

The previous prime is 729963872641. The next prime is 729963872707. The reversal of 729963872665 is 566278369927.

It can be written as a sum of positive squares in 8 ways, for example, as 13936510809 + 716027361856 = 118053^2 + 846184^2 .

It is a cyclic number.

It is not a de Polignac number, because 729963872665 - 2⁷ = 729963872537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 729963872594 and 729963872603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5013777 + ... + 5157313.

It is an arithmetic number, because the mean of its divisors is an integer number (55501623153).

Almost surely, 2^729963872665 is an apocalyptic number.

It is an amenable number.

729963872665 is a deficient number, since it is larger than the sum of its proper divisors (158062097783).

729963872665 is a wasteful number, since it uses less digits than its factorization.

729963872665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157548.

The product of its digits is 411505920, while the sum is 70.

The spelling of 729963872665 in words is "seven hundred twenty-nine billion, nine hundred sixty-three million, eight hundred seventy-two thousand, six hundred sixty-five".