20040104144 has 20 divisors (see below), whose sum is σ = 39407221824. Its totient is φ = 9870498528.

The previous prime is 20040104141. The next prime is 20040104153. The reversal of 20040104144 is 44140104002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040104141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9345992 + ... + 9348135.

Almost surely, 2^20040104144 is an apocalyptic number.

It is an amenable number.

20040104144 is a deficient number, since it is larger than the sum of its proper divisors (19367117680).

20040104144 is a wasteful number, since it uses less digits than its factorization.

20040104144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18694202 (or 18694196 counting only the distinct ones).

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

Adding to 20040104144 its reverse (44140104002), we get a palindrome (64180208146).

The spelling of 20040104144 in words is "twenty billion, forty million, one hundred four thousand, one hundred forty-four".