12541177189 has 2 divisors, whose sum is σ = 12541177190. Its totient is φ = 12541177188.

The previous prime is 12541177157. The next prime is 12541177213. The reversal of 12541177189 is 98177114521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6454836964 + 6086340225 = 80342^2 + 78015^2 .

It is an emirp because it is prime and its reverse (98177114521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12541177189 - 2⁵ = 12541177157 is a prime.

It is a super-2 number, since 2×12541177189² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12541177289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6270588594 + 6270588595.

It is an arithmetic number, because the mean of its divisors is an integer number (6270588595).

Almost surely, 2^12541177189 is an apocalyptic number.

It is an amenable number.

12541177189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12541177189 is an equidigital number, since it uses as much as digits as its factorization.

12541177189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 46.

The spelling of 12541177189 in words is "twelve billion, five hundred forty-one million, one hundred seventy-seven thousand, one hundred eighty-nine".