12015402345473 has 2 divisors, whose sum is σ = 12015402345474. Its totient is φ = 12015402345472.

The previous prime is 12015402345433. The next prime is 12015402345487. The reversal of 12015402345473 is 37454320451021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6146571475984 + 5868830869489 = 2479228^2 + 2422567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12015402345473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12015402345473.

It is not a weakly prime, because it can be changed into another prime (12015402345433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6007701172736 + 6007701172737.

It is an arithmetic number, because the mean of its divisors is an integer number (6007701172737).

Almost surely, 2^{12015402345473} is an apocalyptic number.

It is an amenable number.

12015402345473 is a deficient number, since it is larger than the sum of its proper divisors (1).

12015402345473 is an equidigital number, since it uses as much as digits as its factorization.

12015402345473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 41.

Adding to 12015402345473 its reverse (37454320451021), we get a palindrome (49469722796494).

The spelling of 12015402345473 in words is "twelve trillion, fifteen billion, four hundred two million, three hundred forty-five thousand, four hundred seventy-three".