12641591949 has 8 divisors (see below), whose sum is σ = 19263378240. Its totient is φ = 7223766816.

The previous prime is 12641591923. The next prime is 12641592017. The reversal of 12641591949 is 94919514621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12641591949 - 2⁸ = 12641591693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641592949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300990264 + ... + 300990305.

It is an arithmetic number, because the mean of its divisors is an integer number (2407922280).

Almost surely, 2^12641591949 is an apocalyptic number.

It is an amenable number.

12641591949 is a deficient number, since it is larger than the sum of its proper divisors (6621786291).

12641591949 is an equidigital number, since it uses as much as digits as its factorization.

12641591949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601980579.

The product of its digits is 699840, while the sum is 51.

The spelling of 12641591949 in words is "twelve billion, six hundred forty-one million, five hundred ninety-one thousand, nine hundred forty-nine".