20112324540 has 96 divisors (see below), whose sum is σ = 70210312704. Its totient is φ = 4179183360.

The previous prime is 20112324497. The next prime is 20112324569. The reversal of 20112324540 is 4542321102.

It is a self number, because there is not a number n which added to its sum of digits gives 20112324540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2172039 + ... + 2181278.

It is an arithmetic number, because the mean of its divisors is an integer number (731357424).

Almost surely, 2^20112324540 is an apocalyptic number.

20112324540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112324540 is an abundant number, since it is smaller than the sum of its proper divisors (50097988164).

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

20112324540 is a wasteful number, since it uses less digits than its factorization.

20112324540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353347 (or 4353345 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 20112324540 its reverse (4542321102), we get a palindrome (24654645642).

The spelling of 20112324540 in words is "twenty billion, one hundred twelve million, three hundred twenty-four thousand, five hundred forty".