12544954461 has 48 divisors (see below), whose sum is σ = 20707983296. Its totient is φ = 7540356096.

The previous prime is 12544954453. The next prime is 12544954489. The reversal of 12544954461 is 16445944521.

12544954461 is a `hidden beast` number, since 1 + 2 + 5 + 4 + 49 + 544 + 61 = 666.

It is not a de Polignac number, because 12544954461 - 2³ = 12544954453 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 (12544954361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89661 + ... + 182013.

Almost surely, 2^12544954461 is an apocalyptic number.

It is an amenable number.

12544954461 is a deficient number, since it is larger than the sum of its proper divisors (8163028835).

12544954461 is an equidigital number, since it uses as much as digits as its factorization.

12544954461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92424 (or 92412 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 12544954461 in words is "twelve billion, five hundred forty-four million, nine hundred fifty-four thousand, four hundred sixty-one".