112505040020 has 24 divisors (see below), whose sum is σ = 236514940200. Its totient is φ = 44953567232.

The previous prime is 112505040007. The next prime is 112505040023. The reversal of 112505040020 is 20040505211.

It can be written as a sum of positive squares in 4 ways, for example, as 1814419216 + 110690620804 = 42596^2 + 332702^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 112505039974 and 112505040001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112505040023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3009005 + ... + 3046164.

It is an arithmetic number, because the mean of its divisors is an integer number (9854789175).

Almost surely, 2^112505040020 is an apocalyptic number.

112505040020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112505040020 is an abundant number, since it is smaller than the sum of its proper divisors (124009900180).

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

112505040020 is a wasteful number, since it uses less digits than its factorization.

112505040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6056107 (or 6056105 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 112505040020 its reverse (20040505211), we get a palindrome (132545545231).

The spelling of 112505040020 in words is "one hundred twelve billion, five hundred five million, forty thousand, twenty".