1244453035013 has 4 divisors (see below), whose sum is σ = 1244455297260. Its totient is φ = 1244450772768.

The previous prime is 1244453034971. The next prime is 1244453035039. The reversal of 1244453035013 is 3105303544421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5913302404 + 1238539732609 = 76898^2 + 1112897^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244453035013 - 2³⁴ = 1227273165829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244453035043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284993 + ... + 1603161.

It is an arithmetic number, because the mean of its divisors is an integer number (311113824315).

Almost surely, 2^{1244453035013} is an apocalyptic number.

It is an amenable number.

1244453035013 is a deficient number, since it is larger than the sum of its proper divisors (2262247).

1244453035013 is an equidigital number, since it uses as much as digits as its factorization.

1244453035013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262246.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 1244453035013 its reverse (3105303544421), we get a palindrome (4349756579434).

The spelling of 1244453035013 in words is "one trillion, two hundred forty-four billion, four hundred fifty-three million, thirty-five thousand, thirteen".