444523204121 has 4 divisors (see below), whose sum is σ = 459851590500. Its totient is φ = 429194817744.

The previous prime is 444523204093. The next prime is 444523204123. The reversal of 444523204121 is 121402325444.

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 363560761600 + 80962442521 = 602960^2 + 284539^2 .

It is a cyclic number.

It is not a de Polignac number, because 444523204121 - 2¹⁸ = 444522941977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444523204123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7664193146 + ... + 7664193203.

It is an arithmetic number, because the mean of its divisors is an integer number (114962897625).

Almost surely, 2^444523204121 is an apocalyptic number.

It is an amenable number.

444523204121 is a deficient number, since it is larger than the sum of its proper divisors (15328386379).

444523204121 is a wasteful number, since it uses less digits than its factorization.

444523204121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15328386378.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 444523204121 its reverse (121402325444), we get a palindrome (565925529565).

The spelling of 444523204121 in words is "four hundred forty-four billion, five hundred twenty-three million, two hundred four thousand, one hundred twenty-one".