172966055542277 has 2 divisors, whose sum is σ = 172966055542278. Its totient is φ = 172966055542276.

The previous prime is 172966055542249. The next prime is 172966055542453. The reversal of 172966055542277 is 772245550669271.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164974347046756 + 7991708495521 = 12844234^2 + 2826961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172966055542277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172966055544277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86483027771138 + 86483027771139.

It is an arithmetic number, because the mean of its divisors is an integer number (86483027771139).

Almost surely, 2^{172966055542277} is an apocalyptic number.

It is an amenable number.

172966055542277 is a deficient number, since it is larger than the sum of its proper divisors (1).

172966055542277 is an equidigital number, since it uses as much as digits as its factorization.

172966055542277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528000, while the sum is 68.

The spelling of 172966055542277 in words is "one hundred seventy-two trillion, nine hundred sixty-six billion, fifty-five million, five hundred forty-two thousand, two hundred seventy-seven".