172129607311 has 2 divisors, whose sum is σ = 172129607312. Its totient is φ = 172129607310.

The previous prime is 172129607263. The next prime is 172129607317. The reversal of 172129607311 is 113706921271.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (113706921271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172129607311 - 2¹⁵ = 172129574543 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, 86064803655 + 86064803656.

It is an arithmetic number, because the mean of its divisors is an integer number (86064803656).

Almost surely, 2^172129607311 is an apocalyptic number.

172129607311 is a deficient number, since it is larger than the sum of its proper divisors (1).

172129607311 is an equidigital number, since it uses as much as digits as its factorization.

172129607311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 172129607311 in words is "one hundred seventy-two billion, one hundred twenty-nine million, six hundred seven thousand, three hundred eleven".