12641537171 has 2 divisors, whose sum is σ = 12641537172. Its totient is φ = 12641537170.

The previous prime is 12641537131. The next prime is 12641537177. The reversal of 12641537171 is 17173514621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12641537171 - 2¹⁰ = 12641536147 is a prime.

It is not a weakly prime, because it can be changed into another prime (12641537177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320768585 + 6320768586.

It is an arithmetic number, because the mean of its divisors is an integer number (6320768586).

Almost surely, 2^12641537171 is an apocalyptic number.

12641537171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12641537171 is an equidigital number, since it uses as much as digits as its factorization.

12641537171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 38.

The spelling of 12641537171 in words is "twelve billion, six hundred forty-one million, five hundred thirty-seven thousand, one hundred seventy-one".