17172531007 has 4 divisors (see below), whose sum is σ = 17496541080. Its totient is φ = 16848520936.

The previous prime is 17172531001. The next prime is 17172531017. The reversal of 17172531007 is 70013527171.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70013527171 = 7 ⋅10001932453.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17172531007 is a prime.

It is a super-3 number, since 3×17172531007³ (a number of 32 digits) contains 333 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 (17172531001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162004957 + ... + 162005062.

It is an arithmetic number, because the mean of its divisors is an integer number (4374135270).

Almost surely, 2^17172531007 is an apocalyptic number.

17172531007 is a deficient number, since it is larger than the sum of its proper divisors (324010073).

17172531007 is an equidigital number, since it uses as much as digits as its factorization.

17172531007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324010072.

The product of its (nonzero) digits is 10290, while the sum is 34.

The spelling of 17172531007 in words is "seventeen billion, one hundred seventy-two million, five hundred thirty-one thousand, seven".