20440252554333 has 16 divisors (see below), whose sum is σ = 28293784401600. Its totient is φ = 13110122291840.

The previous prime is 20440252554317. The next prime is 20440252554341. The reversal of 20440252554333 is 33345525204402.

It is a cyclic number.

It is not a de Polignac number, because 20440252554333 - 2⁴ = 20440252554317 is a prime.

It is a super-2 number, since 2×20440252554333² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440252553333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418027923 + ... + 418076816.

It is an arithmetic number, because the mean of its divisors is an integer number (1768361525100).

Almost surely, 2^{20440252554333} is an apocalyptic number.

It is an amenable number.

20440252554333 is a deficient number, since it is larger than the sum of its proper divisors (7853531847267).

20440252554333 is a wasteful number, since it uses less digits than its factorization.

20440252554333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836105052.

The product of its (nonzero) digits is 1728000, while the sum is 42.

Adding to 20440252554333 its reverse (33345525204402), we get a palindrome (53785777758735).

The spelling of 20440252554333 in words is "twenty trillion, four hundred forty billion, two hundred fifty-two million, five hundred fifty-four thousand, three hundred thirty-three".