20112404140 has 12 divisors (see below), whose sum is σ = 42236048736. Its totient is φ = 8044961648.

The previous prime is 20112404131. The next prime is 20112404159. The reversal of 20112404140 is 4140421102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502810084 + ... + 502810123.

It is an arithmetic number, because the mean of its divisors is an integer number (3519670728).

Almost surely, 2^20112404140 is an apocalyptic number.

20112404140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112404140 is an abundant number, since it is smaller than the sum of its proper divisors (22123644596).

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

20112404140 is a wasteful number, since it uses less digits than its factorization.

20112404140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005620216 (or 1005620214 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20112404140 its reverse (4140421102), we get a palindrome (24252825242).

The spelling of 20112404140 in words is "twenty billion, one hundred twelve million, four hundred four thousand, one hundred forty".