12245149727450 has 12 divisors (see below), whose sum is σ = 22775978493150. Its totient is φ = 4898059890960.

The previous prime is 12245149727449. The next prime is 12245149727453. The reversal of 12245149727450 is 5472794154221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6895786716289 + 5349363011161 = 2625983^2 + 2312869^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12245149727392 and 12245149727401.

It is not an unprimeable number, because it can be changed into a prime (12245149727453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122451497225 + ... + 122451497324.

Almost surely, 2^{12245149727450} is an apocalyptic number.

12245149727450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12245149727450 is a deficient number, since it is larger than the sum of its proper divisors (10530828765700).

12245149727450 is a wasteful number, since it uses less digits than its factorization.

12245149727450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244902994561 (or 244902994556 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 12245149727450 in words is "twelve trillion, two hundred forty-five billion, one hundred forty-nine million, seven hundred twenty-seven thousand, four hundred fifty".