12445223452509 has 8 divisors (see below), whose sum is σ = 16593705592992. Its totient is φ = 8296778473520.

The previous prime is 12445223452477. The next prime is 12445223452513. The reversal of 12445223452509 is 90525432254421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12445223452509 - 2⁵ = 12445223452477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445223652509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8499327 + ... + 9855404.

It is an arithmetic number, because the mean of its divisors is an integer number (2074213199124).

Almost surely, 2^{12445223452509} is an apocalyptic number.

It is an amenable number.

12445223452509 is a deficient number, since it is larger than the sum of its proper divisors (4148482140483).

12445223452509 is a wasteful number, since it uses less digits than its factorization.

12445223452509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18580747.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 12445223452509 in words is "twelve trillion, four hundred forty-five billion, two hundred twenty-three million, four hundred fifty-two thousand, five hundred nine".