20113433144 has 96 divisors (see below), whose sum is σ = 44947445760. Its totient is φ = 8256816000.

The previous prime is 20113433107. The next prime is 20113433257. The reversal of 20113433144 is 44133431102.

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 (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72611534 + ... + 72611810.

It is an arithmetic number, because the mean of its divisors is an integer number (468202560).

Almost surely, 2^20113433144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20113433144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22473722880).

20113433144 is an abundant number, since it is smaller than the sum of its proper divisors (24834012616).

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

20113433144 is a wasteful number, since it uses less digits than its factorization.

20113433144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20113433144 its reverse (44133431102), we get a palindrome (64246864246).

The spelling of 20113433144 in words is "twenty billion, one hundred thirteen million, four hundred thirty-three thousand, one hundred forty-four".