201030444020 has 96 divisors (see below), whose sum is σ = 485276520960. Its totient is φ = 68525199360.

The previous prime is 201030444019. The next prime is 201030444061. The reversal of 201030444020 is 20444030102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 201030443983 and 201030444001.

It is a congruent number.

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, 21825176 + ... + 21834384.

It is an arithmetic number, because the mean of its divisors is an integer number (5054963760).

Almost surely, 2^201030444020 is an apocalyptic number.

201030444020 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 201030444020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242638260480).

201030444020 is an abundant number, since it is smaller than the sum of its proper divisors (284246076940).

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

201030444020 is a wasteful number, since it uses less digits than its factorization.

201030444020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10113 (or 10111 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 201030444020 its reverse (20444030102), we get a palindrome (221474474122).

The spelling of 201030444020 in words is "two hundred one billion, thirty million, four hundred forty-four thousand, twenty".