20431042044 has 48 divisors (see below), whose sum is σ = 54497049600. Its totient is φ = 5835911616.

The previous prime is 20431042033. The next prime is 20431042061. The reversal of 20431042044 is 44024013402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312822 + ... + 372450.

It is an arithmetic number, because the mean of its divisors is an integer number (1135355200).

Almost surely, 2^20431042044 is an apocalyptic number.

It is an amenable number.

20431042044 is an abundant number, since it is smaller than the sum of its proper divisors (34066007556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20431042044 is a wasteful number, since it uses less digits than its factorization.

20431042044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63722 (or 63720 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20431042044 its reverse (44024013402), we get a palindrome (64455055446).

The spelling of 20431042044 in words is "twenty billion, four hundred thirty-one million, forty-two thousand, forty-four".