2144440653391 has 2 divisors, whose sum is σ = 2144440653392. Its totient is φ = 2144440653390.

The previous prime is 2144440653379. The next prime is 2144440653401. The reversal of 2144440653391 is 1933560444412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2144440653391 - 2¹¹ = 2144440651343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144440653301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072220326695 + 1072220326696.

It is an arithmetic number, because the mean of its divisors is an integer number (1072220326696).

Almost surely, 2^{2144440653391} is an apocalyptic number.

2144440653391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144440653391 is an equidigital number, since it uses as much as digits as its factorization.

2144440653391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 2144440653391 in words is "two trillion, one hundred forty-four billion, four hundred forty million, six hundred fifty-three thousand, three hundred ninety-one".