17172631460981 has 2 divisors, whose sum is σ = 17172631460982. Its totient is φ = 17172631460980.

The previous prime is 17172631460849. The next prime is 17172631461061. The reversal of 17172631460981 is 18906413627171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15580656250756 + 1591975210225 = 3947234^2 + 1261735^2 .

It is a cyclic number.

It is not a de Polignac number, because 17172631460981 - 2²⁶ = 17172564352117 is a prime.

It is a super-2 number, since 2×17172631460981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17172631760981) 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 as a sum of consecutive naturals, namely, 8586315730490 + 8586315730491.

It is an arithmetic number, because the mean of its divisors is an integer number (8586315730491).

Almost surely, 2^{17172631460981} is an apocalyptic number.

It is an amenable number.

17172631460981 is a deficient number, since it is larger than the sum of its proper divisors (1).

17172631460981 is an equidigital number, since it uses as much as digits as its factorization.

17172631460981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 17172631460981 in words is "seventeen trillion, one hundred seventy-two billion, six hundred thirty-one million, four hundred sixty thousand, nine hundred eighty-one".