12515051549 has 16 divisors (see below), whose sum is σ = 16803427200. Its totient is φ = 9001834560.

The previous prime is 12515051543. The next prime is 12515051561. The reversal of 12515051549 is 94515051521.

12515051549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12515051549 - 2⁸ = 12515051293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515051543) 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 15 ways as a sum of consecutive naturals, for example, 6250274 + ... + 6252275.

It is an arithmetic number, because the mean of its divisors is an integer number (1050214200).

Almost surely, 2^12515051549 is an apocalyptic number.

It is an amenable number.

12515051549 is a deficient number, since it is larger than the sum of its proper divisors (4288375651).

12515051549 is a wasteful number, since it uses less digits than its factorization.

12515051549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12502580.

The product of its (nonzero) digits is 45000, while the sum is 38.

The spelling of 12515051549 in words is "twelve billion, five hundred fifteen million, fifty-one thousand, five hundred forty-nine".