20104440100 has 18 divisors (see below), whose sum is σ = 43626635234. Its totient is φ = 8041776000.

The previous prime is 20104440071. The next prime is 20104440101. The reversal of 20104440100 is 104440102.

It can be written as a sum of positive squares in 3 ways, for example, as 3721976064 + 16382464036 = 61008^2 + 127994^2 .

It is not an unprimeable number, because it can be changed into a prime (20104440101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100522101 + ... + 100522300.

Almost surely, 2^20104440100 is an apocalyptic number.

20104440100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20104440100 is an abundant number, since it is smaller than the sum of its proper divisors (23522195134).

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

20104440100 is a wasteful number, since it uses less digits than its factorization.

20104440100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201044415 (or 201044408 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20104440100 its reverse (104440102), we get a palindrome (20208880202).

The spelling of 20104440100 in words is "twenty billion, one hundred four million, four hundred forty thousand, one hundred".