20112324440 has 32 divisors (see below), whose sum is σ = 48733710480. Its totient is φ = 7426088832.

The previous prime is 20112324439. The next prime is 20112324451. The reversal of 20112324440 is 4442321102.

It is a congruent number.

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, 19338254 + ... + 19339293.

Almost surely, 2^20112324440 is an apocalyptic number.

20112324440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112324440 is an abundant number, since it is smaller than the sum of its proper divisors (28621386040).

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

20112324440 is a wasteful number, since it uses less digits than its factorization.

20112324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38677571 (or 38677567 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20112324440 its reverse (4442321102), we get a palindrome (24554645542).

The spelling of 20112324440 in words is "twenty billion, one hundred twelve million, three hundred twenty-four thousand, four hundred forty".