11988894623171 has 2 divisors, whose sum is σ = 11988894623172. Its totient is φ = 11988894623170.

The previous prime is 11988894623047. The next prime is 11988894623183. The reversal of 11988894623171 is 17132649888911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11988894623171 - 2¹⁸ = 11988894361027 is a prime.

It is not a weakly prime, because it can be changed into another prime (11988894623191) 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, 5994447311585 + 5994447311586.

It is an arithmetic number, because the mean of its divisors is an integer number (5994447311586).

Almost surely, 2^{11988894623171} is an apocalyptic number.

11988894623171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11988894623171 is an equidigital number, since it uses as much as digits as its factorization.

11988894623171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 68.

The spelling of 11988894623171 in words is "eleven trillion, nine hundred eighty-eight billion, eight hundred ninety-four million, six hundred twenty-three thousand, one hundred seventy-one".