20113133140 has 24 divisors (see below), whose sum is σ = 42712162920. Its totient is φ = 7954856448.

The previous prime is 20113133137. The next prime is 20113133147. The reversal of 20113133140 is 4133131102.

It can be written as a sum of positive squares in 4 ways, for example, as 1233273924 + 18879859216 = 35118^2 + 137404^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113133147) 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, 5647977 + ... + 5651536.

It is an arithmetic number, because the mean of its divisors is an integer number (1779673455).

Almost surely, 2^20113133140 is an apocalyptic number.

20113133140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113133140 is an abundant number, since it is smaller than the sum of its proper divisors (22599029780).

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

20113133140 is a wasteful number, since it uses less digits than its factorization.

20113133140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11299611 (or 11299609 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20113133140 its reverse (4133131102), we get a palindrome (24246264242).

The spelling of 20113133140 in words is "twenty billion, one hundred thirteen million, one hundred thirty-three thousand, one hundred forty".