12501449506 has 24 divisors (see below), whose sum is σ = 23206414464. Its totient is φ = 4945627440.

The previous prime is 12501449431. The next prime is 12501449507. The reversal of 12501449506 is 60594410521.

12501449506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12501449507) 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 11 ways as a sum of consecutive naturals, for example, 2639530 + ... + 2644261.

It is an arithmetic number, because the mean of its divisors is an integer number (966933936).

Almost surely, 2^12501449506 is an apocalyptic number.

12501449506 is a deficient number, since it is larger than the sum of its proper divisors (10704964958).

12501449506 is a wasteful number, since it uses less digits than its factorization.

12501449506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5283826 (or 5283813 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 12501449506 in words is "twelve billion, five hundred one million, four hundred forty-nine thousand, five hundred six".