14440841581 has 2 divisors, whose sum is σ = 14440841582. Its totient is φ = 14440841580.

The previous prime is 14440841563. The next prime is 14440841621. The reversal of 14440841581 is 18514804441.

It is an a-pointer prime, because the next prime (14440841621) can be obtained adding 14440841581 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14319951556 + 120890025 = 119666^2 + 10995^2 .

It is a cyclic number.

It is not a de Polignac number, because 14440841581 - 2⁵ = 14440841549 is a prime.

It is a super-2 number, since 2×14440841581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14440841561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7220420790 + 7220420791.

It is an arithmetic number, because the mean of its divisors is an integer number (7220420791).

Almost surely, 2^14440841581 is an apocalyptic number.

It is an amenable number.

14440841581 is a deficient number, since it is larger than the sum of its proper divisors (1).

14440841581 is an equidigital number, since it uses as much as digits as its factorization.

14440841581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81920, while the sum is 40.

The spelling of 14440841581 in words is "fourteen billion, four hundred forty million, eight hundred forty-one thousand, five hundred eighty-one".