12445621051 has 2 divisors, whose sum is σ = 12445621052. Its totient is φ = 12445621050.

The previous prime is 12445621049. The next prime is 12445621061. The reversal of 12445621051 is 15012654421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12445621051 - 2¹ = 12445621049 is a prime.

Together with 12445621049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12445621061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6222810525 + 6222810526.

It is an arithmetic number, because the mean of its divisors is an integer number (6222810526).

Almost surely, 2^12445621051 is an apocalyptic number.

12445621051 is a deficient number, since it is larger than the sum of its proper divisors (1).

12445621051 is an equidigital number, since it uses as much as digits as its factorization.

12445621051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 12445621051 in words is "twelve billion, four hundred forty-five million, six hundred twenty-one thousand, fifty-one".