544343161591 has 2 divisors, whose sum is σ = 544343161592. Its totient is φ = 544343161590.

The previous prime is 544343161547. The next prime is 544343161597. The reversal of 544343161591 is 195161343445.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 544343161591 - 2¹⁷ = 544343030519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544343161597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272171580795 + 272171580796.

It is an arithmetic number, because the mean of its divisors is an integer number (272171580796).

Almost surely, 2^544343161591 is an apocalyptic number.

544343161591 is a deficient number, since it is larger than the sum of its proper divisors (1).

544343161591 is an equidigital number, since it uses as much as digits as its factorization.

544343161591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 46.

The spelling of 544343161591 in words is "five hundred forty-four billion, three hundred forty-three million, one hundred sixty-one thousand, five hundred ninety-one".