20010530000 has 100 divisors (see below), whose sum is σ = 51297782580. Its totient is φ = 7533312000.

The previous prime is 20010529969. The next prime is 20010530003. The reversal of 20010530000 is 3501002.

It can be written as a sum of positive squares in 10 ways, for example, as 13645043344 + 6365486656 = 116812^2 + 79784^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010530003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 111146 + ... + 228854.

Almost surely, 2^20010530000 is an apocalyptic number.

20010530000 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 20010530000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25648891290).

20010530000 is an abundant number, since it is smaller than the sum of its proper divisors (31287252580).

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

20010530000 is a wasteful number, since it uses less digits than its factorization.

20010530000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117754 (or 117733 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The spelling of 20010530000 in words is "twenty billion, ten million, five hundred thirty thousand".