45040444243013 has 2 divisors, whose sum is σ = 45040444243014. Its totient is φ = 45040444243012.

The previous prime is 45040444242977. The next prime is 45040444243073. The reversal of 45040444243013 is 31034244404054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28552158670084 + 16488285572929 = 5343422^2 + 4060577^2 .

It is a cyclic number.

It is not a de Polignac number, because 45040444243013 - 2¹² = 45040444238917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45040444243073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22520222121506 + 22520222121507.

It is an arithmetic number, because the mean of its divisors is an integer number (22520222121507).

Almost surely, 2^{45040444243013} is an apocalyptic number.

It is an amenable number.

45040444243013 is a deficient number, since it is larger than the sum of its proper divisors (1).

45040444243013 is an equidigital number, since it uses as much as digits as its factorization.

45040444243013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 38.

Adding to 45040444243013 its reverse (31034244404054), we get a palindrome (76074688647067).

The spelling of 45040444243013 in words is "forty-five trillion, forty billion, four hundred forty-four million, two hundred forty-three thousand, thirteen".