20444656443 has 8 divisors (see below), whose sum is σ = 27410147856. Its totient is φ = 13554468000.

The previous prime is 20444656439. The next prime is 20444656481. The reversal of 20444656443 is 34465644402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20444656443 - 2² = 20444656439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20444656395 and 20444656404.

It is not an unprimeable number, because it can be changed into a prime (20444656423) 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 7 ways as a sum of consecutive naturals, for example, 18825108 + ... + 18826193.

It is an arithmetic number, because the mean of its divisors is an integer number (3426268482).

Almost surely, 2^20444656443 is an apocalyptic number.

20444656443 is a deficient number, since it is larger than the sum of its proper divisors (6965491413).

20444656443 is a wasteful number, since it uses less digits than its factorization.

20444656443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37651485.

The product of its (nonzero) digits is 1105920, while the sum is 42.

The spelling of 20444656443 in words is "twenty billion, four hundred forty-four million, six hundred fifty-six thousand, four hundred forty-three".