12040409997 has 60 divisors (see below), whose sum is σ = 22824986976. Its totient is φ = 6254735760.

The previous prime is 12040409977. The next prime is 12040410103. The reversal of 12040409997 is 79990404021.

It is a happy number.

12040409997 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 12040409997 - 2²³ = 12032021389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12040409977) 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 59 ways as a sum of consecutive naturals, for example, 94233 + ... + 181550.

Almost surely, 2^12040409997 is an apocalyptic number.

It is an amenable number.

12040409997 is a deficient number, since it is larger than the sum of its proper divisors (10784576979).

12040409997 is a wasteful number, since it uses less digits than its factorization.

12040409997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275820 (or 275804 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 12040409997 in words is "twelve billion, forty million, four hundred nine thousand, nine hundred ninety-seven".