104001000020 has 48 divisors (see below), whose sum is σ = 226073287440. Its totient is φ = 40141000704.

The previous prime is 104000999917. The next prime is 104001000073. The reversal of 104001000020 is 20000100401.

It can be written as a sum of positive squares in 8 ways, for example, as 668325904 + 103332674116 = 25852^2 + 321454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 104000999971 and 104001000007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894692 + ... + 1004228.

It is an arithmetic number, because the mean of its divisors is an integer number (4709860155).

Almost surely, 2^104001000020 is an apocalyptic number.

104001000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104001000020 is an abundant number, since it is smaller than the sum of its proper divisors (122072287420).

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

104001000020 is a wasteful number, since it uses less digits than its factorization.

104001000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111212 (or 111210 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 104001000020 its reverse (20000100401), we get a palindrome (124001100421).

The spelling of 104001000020 in words is "one hundred four billion, one million, twenty", and thus it is an aban number.