172900475729 has 8 divisors (see below), whose sum is σ = 173620773888. Its totient is φ = 172180546560.

The previous prime is 172900475719. The next prime is 172900475749. The reversal of 172900475729 is 927574009271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172900475729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172900475719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867584 + ... + 1048094.

It is an arithmetic number, because the mean of its divisors is an integer number (21702596736).

Almost surely, 2^172900475729 is an apocalyptic number.

It is an amenable number.

172900475729 is a deficient number, since it is larger than the sum of its proper divisors (720298159).

172900475729 is a wasteful number, since it uses less digits than its factorization.

172900475729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184495.

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 172900475729 in words is "one hundred seventy-two billion, nine hundred million, four hundred seventy-five thousand, seven hundred twenty-nine".