144849968591 has 2 divisors, whose sum is σ = 144849968592. Its totient is φ = 144849968590.

The previous prime is 144849968573. The next prime is 144849968651. The reversal of 144849968591 is 195869948441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144849968591 - 2²² = 144845774287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144849968531) 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 as a sum of consecutive naturals, namely, 72424984295 + 72424984296.

It is an arithmetic number, because the mean of its divisors is an integer number (72424984296).

Almost surely, 2^144849968591 is an apocalyptic number.

144849968591 is a deficient number, since it is larger than the sum of its proper divisors (1).

144849968591 is an equidigital number, since it uses as much as digits as its factorization.

144849968591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89579520, while the sum is 68.

The spelling of 144849968591 in words is "one hundred forty-four billion, eight hundred forty-nine million, nine hundred sixty-eight thousand, five hundred ninety-one".