20044140140 has 24 divisors (see below), whose sum is σ = 42526643712. Its totient is φ = 7934999040.

The previous prime is 20044140107. The next prime is 20044140197. The reversal of 20044140140 is 4104144002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5164076 + ... + 5167955.

It is an arithmetic number, because the mean of its divisors is an integer number (1771943488).

Almost surely, 2^20044140140 is an apocalyptic number.

20044140140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20044140140 is an abundant number, since it is smaller than the sum of its proper divisors (22482503572).

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

20044140140 is a wasteful number, since it uses less digits than its factorization.

20044140140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10332137 (or 10332135 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20044140140 its reverse (4104144002), we get a palindrome (24148284142).

The spelling of 20044140140 in words is "twenty billion, forty-four million, one hundred forty thousand, one hundred forty".