20043446890 has 8 divisors (see below), whose sum is σ = 36078204420. Its totient is φ = 8017378752.

The previous prime is 20043446873. The next prime is 20043446903. The reversal of 20043446890 is 9864434002.

It can be written as a sum of positive squares in 2 ways, for example, as 19907234649 + 136212241 = 141093^2 + 11671^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002172335 + ... + 1002172354.

Almost surely, 2^20043446890 is an apocalyptic number.

20043446890 is a deficient number, since it is larger than the sum of its proper divisors (16034757530).

20043446890 is a wasteful number, since it uses less digits than its factorization.

20043446890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004344696.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 20043446890 in words is "twenty billion, forty-three million, four hundred forty-six thousand, eight hundred ninety".