12641752191 has 16 divisors (see below), whose sum is σ = 17251153920. Its totient is φ = 8230172160.

The previous prime is 12641752187. The next prime is 12641752199. The reversal of 12641752191 is 19125714621.

It is a happy number.

It is not a de Polignac number, because 12641752191 - 2² = 12641752187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641752199) 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 in 15 ways as a sum of consecutive naturals, for example, 1191970 + ... + 1202528.

It is an arithmetic number, because the mean of its divisors is an integer number (1078197120).

Almost surely, 2^12641752191 is an apocalyptic number.

12641752191 is a deficient number, since it is larger than the sum of its proper divisors (4609401729).

12641752191 is a wasteful number, since it uses less digits than its factorization.

12641752191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19886.

The product of its digits is 30240, while the sum is 39.

The spelling of 12641752191 in words is "twelve billion, six hundred forty-one million, seven hundred fifty-two thousand, one hundred ninety-one".