729545943673 has 4 divisors (see below), whose sum is σ = 729563015668. Its totient is φ = 729528871680.

The previous prime is 729545943653. The next prime is 729545943683. The reversal of 729545943673 is 376349545927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 572637265984 + 156908677689 = 756728^2 + 396117^2 .

It is a cyclic number.

It is not a de Polignac number, because 729545943673 - 2¹⁷ = 729545812601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729545943653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8471736 + ... + 8557417.

It is an arithmetic number, because the mean of its divisors is an integer number (182390753917).

Almost surely, 2^729545943673 is an apocalyptic number.

It is an amenable number.

729545943673 is a deficient number, since it is larger than the sum of its proper divisors (17071995).

729545943673 is a wasteful number, since it uses less digits than its factorization.

729545943673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17071994.

The product of its digits is 171460800, while the sum is 64.

The spelling of 729545943673 in words is "seven hundred twenty-nine billion, five hundred forty-five million, nine hundred forty-three thousand, six hundred seventy-three".