20044622447 has 4 divisors (see below), whose sum is σ = 20045484456. Its totient is φ = 20043760440.

The previous prime is 20044622441. The next prime is 20044622459. The reversal of 20044622447 is 74422644002.

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

It is a cyclic number.

It is not a de Polignac number, because 20044622447 - 2¹² = 20044618351 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 (20044622441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395129 + ... + 442962.

It is an arithmetic number, because the mean of its divisors is an integer number (5011371114).

Almost surely, 2^20044622447 is an apocalyptic number.

20044622447 is a deficient number, since it is larger than the sum of its proper divisors (862009).

20044622447 is an equidigital number, since it uses as much as digits as its factorization.

20044622447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862008.

The product of its (nonzero) digits is 86016, while the sum is 35.

The spelling of 20044622447 in words is "twenty billion, forty-four million, six hundred twenty-two thousand, four hundred forty-seven".