20440011055 has 16 divisors (see below), whose sum is σ = 25133522400. Its totient is φ = 15948567040.

The previous prime is 20440011041. The next prime is 20440011071. The reversal of 20440011055 is 55011004402.

It is not a de Polignac number, because 20440011055 - 2⁹ = 20440010543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811491 + ... + 836299.

It is an arithmetic number, because the mean of its divisors is an integer number (1570845150).

Almost surely, 2^20440011055 is an apocalyptic number.

20440011055 is a deficient number, since it is larger than the sum of its proper divisors (4693511345).

20440011055 is a wasteful number, since it uses less digits than its factorization.

20440011055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28874.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 20440011055 its reverse (55011004402), we get a palindrome (75451015457).

The spelling of 20440011055 in words is "twenty billion, four hundred forty million, eleven thousand, fifty-five".