172129607327 has 2 divisors, whose sum is σ = 172129607328. Its totient is φ = 172129607326.

The previous prime is 172129607317. The next prime is 172129607341. The reversal of 172129607327 is 723706921271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172129607327 - 2⁴ = 172129607311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172129607317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86064803663 + 86064803664.

It is an arithmetic number, because the mean of its divisors is an integer number (86064803664).

Almost surely, 2^172129607327 is an apocalyptic number.

172129607327 is a deficient number, since it is larger than the sum of its proper divisors (1).

172129607327 is an equidigital number, since it uses as much as digits as its factorization.

172129607327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 47.

The spelling of 172129607327 in words is "one hundred seventy-two billion, one hundred twenty-nine million, six hundred seven thousand, three hundred twenty-seven".