20441950409 has 4 divisors (see below), whose sum is σ = 20450431440. Its totient is φ = 20433469380.

The previous prime is 20441950367. The next prime is 20441950421. The reversal of 20441950409 is 90405914402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20441950409 - 2⁸ = 20441950153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20441952409) 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, 4236899 + ... + 4241720.

It is an arithmetic number, because the mean of its divisors is an integer number (5112607860).

Almost surely, 2^20441950409 is an apocalyptic number.

It is an amenable number.

20441950409 is a deficient number, since it is larger than the sum of its proper divisors (8481031).

20441950409 is an equidigital number, since it uses as much as digits as its factorization.

20441950409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8481030.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 20441950409 in words is "twenty billion, four hundred forty-one million, nine hundred fifty thousand, four hundred nine".