20444442002 has 4 divisors (see below), whose sum is σ = 30666663006. Its totient is φ = 10222221000.

The previous prime is 20444442001. The next prime is 20444442041. The reversal of 20444442002 is 20024444402.

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

It can be written as a sum of positive squares in only one way, i.e., 12575155321 + 7869286681 = 112139^2 + 88709^2 .

It is not an unprimeable number, because it can be changed into a prime (20444442001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111110499 + ... + 5111110502.

Almost surely, 2^20444442002 is an apocalyptic number.

20444442002 is a deficient number, since it is larger than the sum of its proper divisors (10222221004).

20444442002 is a wasteful number, since it uses less digits than its factorization.

20444442002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10222221003.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20444442002 its reverse (20024444402), we get a palindrome (40468886404).

The spelling of 20444442002 in words is "twenty billion, four hundred forty-four million, four hundred forty-two thousand, two".