4444311220381 has 2 divisors, whose sum is σ = 4444311220382. Its totient is φ = 4444311220380.

The previous prime is 4444311220373. The next prime is 4444311220457. The reversal of 4444311220381 is 1830221134444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3440156914756 + 1004154305625 = 1854766^2 + 1002075^2 .

It is a cyclic number.

It is not a de Polignac number, because 4444311220381 - 2³ = 4444311220373 is a prime.

It is a super-2 number, since 2×4444311220381² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4444311220381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4444311220361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222155610190 + 2222155610191.

It is an arithmetic number, because the mean of its divisors is an integer number (2222155610191).

Almost surely, 2^{4444311220381} is an apocalyptic number.

It is an amenable number.

4444311220381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444311220381 is an equidigital number, since it uses as much as digits as its factorization.

4444311220381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 4444311220381 in words is "four trillion, four hundred forty-four billion, three hundred eleven million, two hundred twenty thousand, three hundred eighty-one".