12257324961 has 24 divisors (see below), whose sum is σ = 19525190400. Its totient is φ = 6814880352.

The previous prime is 12257324957. The next prime is 12257324969. The reversal of 12257324961 is 16942375221.

It is a happy number.

It is not a de Polignac number, because 12257324961 - 2² = 12257324957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12257324969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1121361 + ... + 1132238.

It is an arithmetic number, because the mean of its divisors is an integer number (813549600).

Almost surely, 2^12257324961 is an apocalyptic number.

It is an amenable number.

12257324961 is a deficient number, since it is larger than the sum of its proper divisors (7267865439).

12257324961 is a wasteful number, since it uses less digits than its factorization.

12257324961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253653 (or 2253646 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The spelling of 12257324961 in words is "twelve billion, two hundred fifty-seven million, three hundred twenty-four thousand, nine hundred sixty-one".