10002000020 has 48 divisors (see below), whose sum is σ = 21528956736. Its totient is φ = 3900960000.

The previous prime is 10001999983. The next prime is 10002000059. The reversal of 10002000020 is 2000020001.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a junction number, because it is equal to n+sod(n) for n = 10001999968 and 10002000013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2466995 + ... + 2471045.

It is an arithmetic number, because the mean of its divisors is an integer number (448519932).

Almost surely, 2^10002000020 is an apocalyptic number.

10002000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10002000020 is an abundant number, since it is smaller than the sum of its proper divisors (11526956716).

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

10002000020 is a wasteful number, since it uses less digits than its factorization.

10002000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7112 (or 7110 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

Adding to 10002000020 its reverse (2000020001), we get a palindrome (12002020021).

The spelling of 10002000020 in words is "ten billion, two million, twenty", and thus it is an aban number and an uban number.