172333900729 has 8 divisors (see below), whose sum is σ = 178307250120. Its totient is φ = 166362604800.

The previous prime is 172333900603. The next prime is 172333900829. The reversal of 172333900729 is 927009333271.

It can be written as a sum of positive squares in 4 ways, for example, as 28435065129 + 143898835600 = 168627^2 + 379340^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 172333900729 - 2¹³ = 172333892537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172333900429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341632 + ... + 679249.

It is an arithmetic number, because the mean of its divisors is an integer number (22288406265).

Almost surely, 2^172333900729 is an apocalyptic number.

It is an amenable number.

172333900729 is a deficient number, since it is larger than the sum of its proper divisors (5973349391).

172333900729 is a wasteful number, since it uses less digits than its factorization.

172333900729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026731.

The product of its (nonzero) digits is 428652, while the sum is 46.

The spelling of 172333900729 in words is "one hundred seventy-two billion, three hundred thirty-three million, nine hundred thousand, seven hundred twenty-nine".