20130444443 has 2 divisors, whose sum is σ = 20130444444. Its totient is φ = 20130444442.

The previous prime is 20130444421. The next prime is 20130444457. The reversal of 20130444443 is 34444403102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20130444443 - 2¹⁶ = 20130378907 is a prime.

It is not a weakly prime, because it can be changed into another prime (20130444473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065222221 + 10065222222.

It is an arithmetic number, because the mean of its divisors is an integer number (10065222222).

Almost surely, 2^20130444443 is an apocalyptic number.

20130444443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130444443 is an equidigital number, since it uses as much as digits as its factorization.

20130444443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 20130444443 its reverse (34444403102), we get a palindrome (54574847545).

The spelling of 20130444443 in words is "twenty billion, one hundred thirty million, four hundred forty-four thousand, four hundred forty-three".