1444420311413 has 4 divisors (see below), whose sum is σ = 1479650075148. Its totient is φ = 1409190547680.

The previous prime is 1444420311409. The next prime is 1444420311427. The reversal of 1444420311413 is 3141130244441.

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 89354362084 + 1355065949329 = 298922^2 + 1164073^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444420311413 - 2² = 1444420311409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1444420311413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444420311493) 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 in 3 ways as a sum of consecutive naturals, for example, 17614881806 + ... + 17614881887.

It is an arithmetic number, because the mean of its divisors is an integer number (369912518787).

Almost surely, 2^{1444420311413} is an apocalyptic number.

It is an amenable number.

1444420311413 is a deficient number, since it is larger than the sum of its proper divisors (35229763735).

1444420311413 is an equidigital number, since it uses as much as digits as its factorization.

1444420311413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35229763734.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 1444420311413 its reverse (3141130244441), we get a palindrome (4585550555854).

The spelling of 1444420311413 in words is "one trillion, four hundred forty-four billion, four hundred twenty million, three hundred eleven thousand, four hundred thirteen".