20442244989 has 8 divisors (see below), whose sum is σ = 28690870240. Its totient is φ = 12910891536.

The previous prime is 20442244987. The next prime is 20442245009. The reversal of 20442244989 is 98944224402.

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 20442244989 - 2¹ = 20442244987 is a prime.

It is a super-2 number, since 2×20442244989² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442244987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179317882 + ... + 179317995.

It is an arithmetic number, because the mean of its divisors is an integer number (3586358780).

Almost surely, 2^20442244989 is an apocalyptic number.

It is an amenable number.

20442244989 is a deficient number, since it is larger than the sum of its proper divisors (8248625251).

20442244989 is a wasteful number, since it uses less digits than its factorization.

20442244989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358635899.

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 20442244989 in words is "twenty billion, four hundred forty-two million, two hundred forty-four thousand, nine hundred eighty-nine".