171720007233 has 16 divisors (see below), whose sum is σ = 239356461696. Its totient is φ = 109300181760.

The previous prime is 171720007231. The next prime is 171720007237. The reversal of 171720007233 is 332700027171.

It is not a de Polignac number, because 171720007233 - 2¹ = 171720007231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171720007194 and 171720007203.

It is not an unprimeable number, because it can be changed into a prime (171720007231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2262760 + ... + 2337417.

It is an arithmetic number, because the mean of its divisors is an integer number (14959778856).

Almost surely, 2^171720007233 is an apocalyptic number.

It is an amenable number.

171720007233 is a deficient number, since it is larger than the sum of its proper divisors (67636454463).

171720007233 is a wasteful number, since it uses less digits than its factorization.

171720007233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600744.

The product of its (nonzero) digits is 12348, while the sum is 33.

The spelling of 171720007233 in words is "one hundred seventy-one billion, seven hundred twenty million, seven thousand, two hundred thirty-three".