12115497144 has 16 divisors (see below), whose sum is σ = 30288742920. Its totient is φ = 4038499040.

The previous prime is 12115497143. The next prime is 12115497161. The reversal of 12115497144 is 44179451121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115497143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252406167 + ... + 252406214.

Almost surely, 2^12115497144 is an apocalyptic number.

It is an amenable number.

12115497144 is an abundant number, since it is smaller than the sum of its proper divisors (18173245776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12115497144 is a wasteful number, since it uses less digits than its factorization.

12115497144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504812390 (or 504812386 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The spelling of 12115497144 in words is "twelve billion, one hundred fifteen million, four hundred ninety-seven thousand, one hundred forty-four".