111534440020 has 24 divisors (see below), whose sum is σ = 234671908968. Its totient is φ = 44528140800.

The previous prime is 111534439981. The next prime is 111534440081. The reversal of 111534440020 is 20044435111.

111534440020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 450882756 + 111083557264 = 21234^2 + 333292^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5341521 + ... + 5362360.

It is an arithmetic number, because the mean of its divisors is an integer number (9777996207).

Almost surely, 2^111534440020 is an apocalyptic number.

111534440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111534440020 is an abundant number, since it is smaller than the sum of its proper divisors (123137468948).

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

111534440020 is a wasteful number, since it uses less digits than its factorization.

111534440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10704411 (or 10704409 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 111534440020 its reverse (20044435111), we get a palindrome (131578875131).

The spelling of 111534440020 in words is "one hundred eleven billion, five hundred thirty-four million, four hundred forty thousand, twenty".