201044421423 has 24 divisors (see below), whose sum is σ = 310070547072. Its totient is φ = 125220786768.

The previous prime is 201044421419. The next prime is 201044421443. The reversal of 201044421423 is 324124440102.

201044421423 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 444 + 214 + 2 + 3 = 666.

It is not a de Polignac number, because 201044421423 - 2² = 201044421419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044421443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11284461 + ... + 11302262.

It is an arithmetic number, because the mean of its divisors is an integer number (12919606128).

Almost surely, 2^201044421423 is an apocalyptic number.

201044421423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

201044421423 is a deficient number, since it is larger than the sum of its proper divisors (109026125649).

201044421423 is a wasteful number, since it uses less digits than its factorization.

201044421423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22586795 (or 22586792 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 201044421423 its reverse (324124440102), we get a palindrome (525168861525).

The spelling of 201044421423 in words is "two hundred one billion, forty-four million, four hundred twenty-one thousand, four hundred twenty-three".