12516545445 has 16 divisors (see below), whose sum is σ = 20035542912. Its totient is φ = 6672467520.

The previous prime is 12516545429. The next prime is 12516545473. The reversal of 12516545445 is 54454561521.

It is a happy number.

12516545445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12516545445 - 2⁴ = 12516545429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12516545397 and 12516545406.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 154537 + ... + 221166.

It is an arithmetic number, because the mean of its divisors is an integer number (1252221432).

Almost surely, 2^12516545445 is an apocalyptic number.

12516545445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12516545445 is a deficient number, since it is larger than the sum of its proper divisors (7518997467).

12516545445 is a wasteful number, since it uses less digits than its factorization.

12516545445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377932.

The product of its digits is 480000, while the sum is 42.

The spelling of 12516545445 in words is "twelve billion, five hundred sixteen million, five hundred forty-five thousand, four hundred forty-five".