20112403431444 has 48 divisors (see below), whose sum is σ = 46966099440960. Its totient is φ = 6698826749440.

The previous prime is 20112403431383. The next prime is 20112403431487. The reversal of 20112403431444 is 44413430421102.

It is a happy number.

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, 564889747 + ... + 564925349.

It is an arithmetic number, because the mean of its divisors is an integer number (978460405020).

Almost surely, 2^{20112403431444} is an apocalyptic number.

It is an amenable number.

20112403431444 is an abundant number, since it is smaller than the sum of its proper divisors (26853696009516).

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

20112403431444 is a wasteful number, since it uses less digits than its factorization.

20112403431444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71560 (or 71558 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 20112403431444 its reverse (44413430421102), we get a palindrome (64525833852546).

The spelling of 20112403431444 in words is "twenty trillion, one hundred twelve billion, four hundred three million, four hundred thirty-one thousand, four hundred forty-four".