43111144020 has 192 divisors, whose sum is σ = 146032588800. Its totient is φ = 9282885120.

The previous prime is 43111144009. The next prime is 43111144073. The reversal of 43111144020 is 2044111134.

43111144020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1413330 + ... + 1443510.

It is an arithmetic number, because the mean of its divisors is an integer number (760586400).

Almost surely, 2^43111144020 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 43111144020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73016294400).

43111144020 is an abundant number, since it is smaller than the sum of its proper divisors (102921444780).

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

43111144020 is a wasteful number, since it uses less digits than its factorization.

43111144020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30398 (or 30396 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 43111144020 its reverse (2044111134), we get a palindrome (45155255154).

It can be divided in two parts, 4311114 and 4020, that added together give a palindrome (4315134).

The spelling of 43111144020 in words is "forty-three billion, one hundred eleven million, one hundred forty-four thousand, twenty".