20444120001 has 6 divisors (see below), whose sum is σ = 29530395570. Its totient is φ = 13629413328.

The previous prime is 20444119999. The next prime is 20444120129. The reversal of 20444120001 is 10002144402.

20444120001 is a `hidden beast` number, since 20 + 4 + 441 + 200 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19951280001 + 492840000 = 141249^2 + 22200^2 .

It is not a de Polignac number, because 20444120001 - 2¹ = 20444119999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20444820001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1135784436 + ... + 1135784453.

It is an arithmetic number, because the mean of its divisors is an integer number (4921732595).

Almost surely, 2^20444120001 is an apocalyptic number.

It is an amenable number.

20444120001 is a deficient number, since it is larger than the sum of its proper divisors (9086275569).

20444120001 is a wasteful number, since it uses less digits than its factorization.

20444120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271568895 (or 2271568892 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20444120001 its reverse (10002144402), we get a palindrome (30446264403).

The spelling of 20444120001 in words is "twenty billion, four hundred forty-four million, one hundred twenty thousand, one".