12926449015 has 16 divisors (see below), whose sum is σ = 15670886400. Its totient is φ = 10235171232.

The previous prime is 12926449013. The next prime is 12926449027. The reversal of 12926449015 is 51094462921.

It is a cyclic number.

It is not a de Polignac number, because 12926449015 - 2¹ = 12926449013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12926449013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116426 + ... + 1127944.

It is an arithmetic number, because the mean of its divisors is an integer number (979430400).

Almost surely, 2^12926449015 is an apocalyptic number.

12926449015 is a deficient number, since it is larger than the sum of its proper divisors (2744437385).

12926449015 is a wasteful number, since it uses less digits than its factorization.

12926449015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13806.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 12926449015 in words is "twelve billion, nine hundred twenty-six million, four hundred forty-nine thousand, fifteen".