20104443140 has 24 divisors (see below), whose sum is σ = 43675170840. Its totient is φ = 7764474368.

The previous prime is 20104443137. The next prime is 20104443143. The reversal of 20104443140 is 4134440102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20104443137) and next prime (20104443143).

It can be written as a sum of positive squares in 4 ways, for example, as 160224964 + 19944218176 = 12658^2 + 141224^2 .

It is not an unprimeable number, because it can be changed into a prime (20104443143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17330837 + ... + 17331996.

It is an arithmetic number, because the mean of its divisors is an integer number (1819798785).

Almost surely, 2^20104443140 is an apocalyptic number.

20104443140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20104443140 is an abundant number, since it is smaller than the sum of its proper divisors (23570727700).

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

20104443140 is a wasteful number, since it uses less digits than its factorization.

20104443140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34662871 (or 34662869 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20104443140 its reverse (4134440102), we get a palindrome (24238883242).

The spelling of 20104443140 in words is "twenty billion, one hundred four million, four hundred forty-three thousand, one hundred forty".