729380317172 has 24 divisors (see below), whose sum is σ = 1375718141952. Its totient is φ = 336363573600.

The previous prime is 729380317157. The next prime is 729380317189. The reversal of 729380317172 is 271713083927.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 729380317172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5633204 + ... + 5761227.

It is an arithmetic number, because the mean of its divisors is an integer number (57321589248).

Almost surely, 2^729380317172 is an apocalyptic number.

It is an amenable number.

729380317172 is a deficient number, since it is larger than the sum of its proper divisors (646337824780).

729380317172 is a wasteful number, since it uses less digits than its factorization.

729380317172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11395679 (or 11395677 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 50.

The spelling of 729380317172 in words is "seven hundred twenty-nine billion, three hundred eighty million, three hundred seventeen thousand, one hundred seventy-two".