12445402208 has 12 divisors (see below), whose sum is σ = 24501885660. Its totient is φ = 6222701088.

The previous prime is 12445402199. The next prime is 12445402213. The reversal of 12445402208 is 80220454421.

It is a super-2 number, since 2×12445402208² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 388918819 = 12445402208 / (1 + 2 + 4 + 4 + 5 + 4 + 0 + 2 + 2 + 0 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194459378 + ... + 194459441.

It is an arithmetic number, because the mean of its divisors is an integer number (2041823805).

Almost surely, 2^12445402208 is an apocalyptic number.

It is an amenable number.

12445402208 is a deficient number, since it is larger than the sum of its proper divisors (12056483452).

12445402208 is an equidigital number, since it uses as much as digits as its factorization.

12445402208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388918829 (or 388918821 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

Adding to 12445402208 its reverse (80220454421), we get a palindrome (92665856629).

The spelling of 12445402208 in words is "twelve billion, four hundred forty-five million, four hundred two thousand, two hundred eight".