172023410652281 has 2 divisors, whose sum is σ = 172023410652282. Its totient is φ = 172023410652280.

The previous prime is 172023410652229. The next prime is 172023410652293. The reversal of 172023410652281 is 182256014320271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87778254690025 + 84245155962256 = 9369005^2 + 9178516^2 .

It is a cyclic number.

It is not a de Polignac number, because 172023410652281 - 2¹⁸ = 172023410390137 is a prime.

It is a super-2 number, since 2×172023410652281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172023410652481) 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, 86011705326140 + 86011705326141.

It is an arithmetic number, because the mean of its divisors is an integer number (86011705326141).

Almost surely, 2^{172023410652281} is an apocalyptic number.

It is an amenable number.

172023410652281 is a deficient number, since it is larger than the sum of its proper divisors (1).

172023410652281 is an equidigital number, since it uses as much as digits as its factorization.

172023410652281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 172023410652281 in words is "one hundred seventy-two trillion, twenty-three billion, four hundred ten million, six hundred fifty-two thousand, two hundred eighty-one".