20111132140 has 48 divisors (see below), whose sum is σ = 46082693664. Its totient is φ = 7311564800.

The previous prime is 20111132113. The next prime is 20111132189. The reversal of 20111132140 is 4123111102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1647660 + ... + 1659820.

It is an arithmetic number, because the mean of its divisors is an integer number (960056118).

Almost surely, 2^20111132140 is an apocalyptic number.

20111132140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111132140 is an abundant number, since it is smaller than the sum of its proper divisors (25971561524).

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

20111132140 is a wasteful number, since it uses less digits than its factorization.

20111132140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19698 (or 19696 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20111132140 its reverse (4123111102), we get a palindrome (24234243242).

It can be divided in two parts, 20111 and 132140, that added together give a palindrome (152251).

The spelling of 20111132140 in words is "twenty billion, one hundred eleven million, one hundred thirty-two thousand, one hundred forty".