172136446303 has 16 divisors (see below), whose sum is σ = 176606576640. Its totient is φ = 167734639296.

The previous prime is 172136446289. The next prime is 172136446309. The reversal of 172136446303 is 303644631271.

It is a cyclic number.

It is not a de Polignac number, because 172136446303 - 2²⁵ = 172102891871 is a prime.

It is a super-2 number, since 2×172136446303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172136446309) 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 15 ways as a sum of consecutive naturals, for example, 2176926 + ... + 2254612.

It is an arithmetic number, because the mean of its divisors is an integer number (11037911040).

Almost surely, 2^172136446303 is an apocalyptic number.

172136446303 is a deficient number, since it is larger than the sum of its proper divisors (4470130337).

172136446303 is a wasteful number, since it uses less digits than its factorization.

172136446303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78126.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 172136446303 in words is "one hundred seventy-two billion, one hundred thirty-six million, four hundred forty-six thousand, three hundred three".