20043442447279 has 6 divisors (see below), whose sum is σ = 21153882472440. Its totient is φ = 18988524423396.

The previous prime is 20043442447277. The next prime is 20043442447289. The reversal of 20043442447279 is 97274424434002.

It is a happy number.

It is not a de Polignac number, because 20043442447279 - 2¹ = 20043442447277 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 (20043442447277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27761000259 + ... + 27761000980.

It is an arithmetic number, because the mean of its divisors is an integer number (3525647078740).

Almost surely, 2^{20043442447279} is an apocalyptic number.

20043442447279 is a deficient number, since it is larger than the sum of its proper divisors (1110440025161).

20043442447279 is an equidigital number, since it uses as much as digits as its factorization.

20043442447279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55522001277 (or 55522001258 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 52.

The spelling of 20043442447279 in words is "twenty trillion, forty-three billion, four hundred forty-two million, four hundred forty-seven thousand, two hundred seventy-nine".