172439005663 has 2 divisors, whose sum is σ = 172439005664. Its totient is φ = 172439005662.

The previous prime is 172439005643. The next prime is 172439005693. The reversal of 172439005663 is 366500934271.

172439005663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (366500934271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172439005663 - 2⁵ = 172439005631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172439005643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86219502831 + 86219502832.

It is an arithmetic number, because the mean of its divisors is an integer number (86219502832).

Almost surely, 2^172439005663 is an apocalyptic number.

172439005663 is a deficient number, since it is larger than the sum of its proper divisors (1).

172439005663 is an equidigital number, since it uses as much as digits as its factorization.

172439005663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 172439005663 in words is "one hundred seventy-two billion, four hundred thirty-nine million, five thousand, six hundred sixty-three".