12491084907 has 24 divisors (see below), whose sum is σ = 20820410624. Its totient is φ = 7068460464.

The previous prime is 12491084897. The next prime is 12491084909. The reversal of 12491084907 is 70948019421.

It is a happy number.

12491084907 is a `hidden beast` number, since 12 + 49 + 108 + 490 + 7 = 666.

12491084907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12491084907 - 2¹⁵ = 12491052139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12491084909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 955993 + ... + 968970.

Almost surely, 2^12491084907 is an apocalyptic number.

12491084907 is a deficient number, since it is larger than the sum of its proper divisors (8329325717).

12491084907 is a wasteful number, since it uses less digits than its factorization.

12491084907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925079 (or 1925076 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 12491084907 in words is "twelve billion, four hundred ninety-one million, eighty-four thousand, nine hundred seven".