20112403434440 has 32 divisors (see below), whose sum is σ = 45253052498880. Its totient is φ = 8044935636672.

The previous prime is 20112403434421. The next prime is 20112403434517. The reversal of 20112403434440 is 4443430421102.

It is a super-2 number, since 2×20112403434440² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20112403434397 and 20112403434406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16397159 + ... + 17581001.

It is an arithmetic number, because the mean of its divisors is an integer number (1414157890590).

Almost surely, 2^{20112403434440} is an apocalyptic number.

20112403434440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112403434440 is an abundant number, since it is smaller than the sum of its proper divisors (25140649064440).

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

20112403434440 is a wasteful number, since it uses less digits than its factorization.

20112403434440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608581 (or 1608577 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 20112403434440 its reverse (4443430421102), we get a palindrome (24555833855542).

The spelling of 20112403434440 in words is "twenty trillion, one hundred twelve billion, four hundred three million, four hundred thirty-four thousand, four hundred forty".