20440033442001 has 12 divisors (see below), whose sum is σ = 31261227617412. Its totient is φ = 12825119022336.

The previous prime is 20440033441981. The next prime is 20440033442093. The reversal of 20440033442001 is 10024433004402.

It is a happy number.

20440033442001 is a `hidden beast` number, since 20 + 4 + 400 + 3 + 34 + 4 + 200 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18333819803601 + 2106213638400 = 4281801^2 + 1451280^2 .

It is not a de Polignac number, because 20440033442001 - 2⁵ = 20440033441969 is a prime.

It is a super-2 number, since 2×20440033442001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20440033442501) 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, 66797494756 + ... + 66797495061.

It is an arithmetic number, because the mean of its divisors is an integer number (2605102301451).

Almost surely, 2^{20440033442001} is an apocalyptic number.

It is an amenable number.

20440033442001 is a deficient number, since it is larger than the sum of its proper divisors (10821194175411).

20440033442001 is a wasteful number, since it uses less digits than its factorization.

20440033442001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133594989840 (or 133594989837 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20440033442001 its reverse (10024433004402), we get a palindrome (30464466446403).

The spelling of 20440033442001 in words is "twenty trillion, four hundred forty billion, thirty-three million, four hundred forty-two thousand, one".