1443121340413 has 4 divisors (see below), whose sum is σ = 1443369007360. Its totient is φ = 1442873673468.

The previous prime is 1443121340407. The next prime is 1443121340429. The reversal of 1443121340413 is 3140431213441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1443121340413 - 2¹³ = 1443121332221 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 (1443121346413) 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, 123824733 + ... + 123836386.

It is an arithmetic number, because the mean of its divisors is an integer number (360842251840).

Almost surely, 2^{1443121340413} is an apocalyptic number.

It is an amenable number.

1443121340413 is a deficient number, since it is larger than the sum of its proper divisors (247666947).

1443121340413 is an equidigital number, since it uses as much as digits as its factorization.

1443121340413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247666946.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 1443121340413 its reverse (3140431213441), we get a palindrome (4583552553854).

The spelling of 1443121340413 in words is "one trillion, four hundred forty-three billion, one hundred twenty-one million, three hundred forty thousand, four hundred thirteen".