20444402002 has 24 divisors (see below), whose sum is σ = 32901366960. Its totient is φ = 9501420240.

The previous prime is 20444401993. The next prime is 20444402003. The reversal of 20444402002 is 20020444402.

It is not an unprimeable number, because it can be changed into a prime (20444402003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10977 + ... + 202507.

It is an arithmetic number, because the mean of its divisors is an integer number (1370890290).

Almost surely, 2^20444402002 is an apocalyptic number.

20444402002 is a deficient number, since it is larger than the sum of its proper divisors (12456964958).

20444402002 is a wasteful number, since it uses less digits than its factorization.

20444402002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191658 (or 191605 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20444402002 its reverse (20020444402), we get a palindrome (40464846404).

The spelling of 20444402002 in words is "twenty billion, four hundred forty-four million, four hundred two thousand, two".