12455521516 has 24 divisors (see below), whose sum is σ = 23071171760. Its totient is φ = 5867380800.

The previous prime is 12455521483. The next prime is 12455521531. The reversal of 12455521516 is 61512555421.

12455521516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 438975 + ... + 466486.

Almost surely, 2^12455521516 is an apocalyptic number.

It is an amenable number.

12455521516 is a deficient number, since it is larger than the sum of its proper divisors (10615650244).

12455521516 is a wasteful number, since it uses less digits than its factorization.

12455521516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905665 (or 905663 counting only the distinct ones).

The product of its digits is 60000, while the sum is 37.

The spelling of 12455521516 in words is "twelve billion, four hundred fifty-five million, five hundred twenty-one thousand, five hundred sixteen".