729131946945 has 16 divisors (see below), whose sum is σ = 1166742895680. Its totient is φ = 388826444864.

The previous prime is 729131946901. The next prime is 729131946947. The reversal of 729131946945 is 549649131927.

It is a cyclic number.

It is not a de Polignac number, because 729131946945 - 2¹⁰ = 729131945921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (729131946947) 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 15 ways as a sum of consecutive naturals, for example, 2607990 + ... + 2873999.

It is an arithmetic number, because the mean of its divisors is an integer number (72921430980).

Almost surely, 2^729131946945 is an apocalyptic number.

It is an amenable number.

729131946945 is a deficient number, since it is larger than the sum of its proper divisors (437610948735).

729131946945 is a wasteful number, since it uses less digits than its factorization.

729131946945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5490864.

The product of its digits is 14696640, while the sum is 60.

The spelling of 729131946945 in words is "seven hundred twenty-nine billion, one hundred thirty-one million, nine hundred forty-six thousand, nine hundred forty-five".