201044443997 has 4 divisors (see below), whose sum is σ = 201048034620. Its totient is φ = 201040853376.

The previous prime is 201044443979. The next prime is 201044444023. The reversal of 201044443997 is 799344440102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122201981476 + 78842462521 = 349574^2 + 280789^2 .

It is a cyclic number.

It is not a de Polignac number, because 201044443997 - 2⁸ = 201044443741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044443927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709972 + ... + 1823757.

It is an arithmetic number, because the mean of its divisors is an integer number (50262008655).

Almost surely, 2^201044443997 is an apocalyptic number.

It is an amenable number.

201044443997 is a deficient number, since it is larger than the sum of its proper divisors (3590623).

201044443997 is an equidigital number, since it uses as much as digits as its factorization.

201044443997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590622.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 201044443997 in words is "two hundred one billion, forty-four million, four hundred forty-three thousand, nine hundred ninety-seven".