20013001000 has 128 divisors (see below), whose sum is σ = 47466207360. Its totient is φ = 7897344000.

The previous prime is 20013000991. The next prime is 20013001031. The reversal of 20013001000 is 10031002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29736664 + ... + 29737336.

It is an arithmetic number, because the mean of its divisors is an integer number (370829745).

Almost surely, 2^20013001000 is an apocalyptic number.

20013001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20013001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23733103680).

20013001000 is an abundant number, since it is smaller than the sum of its proper divisors (27453206360).

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

20013001000 is a wasteful number, since it uses less digits than its factorization.

20013001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

Adding to 20013001000 its reverse (10031002), we get a palindrome (20023032002).

The spelling of 20013001000 in words is "twenty billion, thirteen million, one thousand".