201044433090 has 64 divisors (see below), whose sum is σ = 492117906816. Its totient is φ = 52552945152.

The previous prime is 201044433011. The next prime is 201044433097. The reversal of 201044433090 is 90334440102.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (201044433097) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75372 + ... + 638568.

It is an arithmetic number, because the mean of its divisors is an integer number (7689342294).

Almost surely, 2^201044433090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201044433090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246058953408).

201044433090 is an abundant number, since it is smaller than the sum of its proper divisors (291073473726).

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

201044433090 is a wasteful number, since it uses less digits than its factorization.

201044433090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563443.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 201044433090 its reverse (90334440102), we get a palindrome (291378873192).

The spelling of 201044433090 in words is "two hundred one billion, forty-four million, four hundred thirty-three thousand, ninety".