444733131907121 has 4 divisors (see below), whose sum is σ = 444733176235044. Its totient is φ = 444733087579200.

The previous prime is 444733131907111. The next prime is 444733131907189. The reversal of 444733131907121 is 121709131337444.

444733131907121 = 14911960² + 14911961².

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 222366580865521 + 222366551041600 = 14911961^2 + 14911960^2 .

It is a cyclic number.

It is not a de Polignac number, because 444733131907121 - 2²⁶ = 444733064798257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444733131907121.

It is not an unprimeable number, because it can be changed into a prime (444733131907111) 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, 852461 + ... + 29836101.

It is an arithmetic number, because the mean of its divisors is an integer number (111183294058761).

It is a Poulet number, since it divides 2^{444733131907120}-1.

Almost surely, 2^{444733131907121} is an apocalyptic number.

444733131907121 is the 14911961-st centered square number.

It is an amenable number.

444733131907121 is a deficient number, since it is larger than the sum of its proper divisors (44327923).

444733131907121 is a wasteful number, since it uses less digits than its factorization.

444733131907121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44327922.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 444733131907121 in words is "four hundred forty-four trillion, seven hundred thirty-three billion, one hundred thirty-one million, nine hundred seven thousand, one hundred twenty-one".