20540044418 has 16 divisors (see below), whose sum is σ = 31807759104. Its totient is φ = 9937537680.

The previous prime is 20540044417. The next prime is 20540044423. The reversal of 20540044418 is 81444004502.

It is not an unprimeable number, because it can be changed into a prime (20540044417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721796 + ... + 749712.

It is an arithmetic number, because the mean of its divisors is an integer number (1987984944).

Almost surely, 2^20540044418 is an apocalyptic number.

20540044418 is a deficient number, since it is larger than the sum of its proper divisors (11267714686).

20540044418 is a wasteful number, since it uses less digits than its factorization.

20540044418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39817.

The product of its (nonzero) digits is 20480, while the sum is 32.

The spelling of 20540044418 in words is "twenty billion, five hundred forty million, forty-four thousand, four hundred eighteen".