20104442040 has 32 divisors (see below), whose sum is σ = 60313326480. Its totient is φ = 5361184512.

The previous prime is 20104442021. The next prime is 20104442077. The reversal of 20104442040 is 4024440102.

It is a junction number, because it is equal to n+sod(n) for n = 20104441998 and 20104442016.

It is a congruent number.

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, 83768389 + ... + 83768628.

Almost surely, 2^20104442040 is an apocalyptic number.

20104442040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20104442040 is an abundant number, since it is smaller than the sum of its proper divisors (40208884440).

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

20104442040 is a wasteful number, since it uses less digits than its factorization.

20104442040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167537031 (or 167537027 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20104442040 its reverse (4024440102), we get a palindrome (24128882142).

The spelling of 20104442040 in words is "twenty billion, one hundred four million, four hundred forty-two thousand, forty".