1255544541019 has 2 divisors, whose sum is σ = 1255544541020. Its totient is φ = 1255544541018.

The previous prime is 1255544540911. The next prime is 1255544541113. The reversal of 1255544541019 is 9101454455521.

It is a happy number.

Together with previous prime (1255544540911) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (9101454455521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1255544541019 - 2¹⁹ = 1255544016731 is a prime.

It is a super-2 number, since 2×1255544541019² (a number of 25 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 1255544541019.

It is not a weakly prime, because it can be changed into another prime (1255544541619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627772270509 + 627772270510.

It is an arithmetic number, because the mean of its divisors is an integer number (627772270510).

Almost surely, 2^{1255544541019} is an apocalyptic number.

1255544541019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255544541019 is an equidigital number, since it uses as much as digits as its factorization.

1255544541019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720000, while the sum is 46.

The spelling of 1255544541019 in words is "one trillion, two hundred fifty-five billion, five hundred forty-four million, five hundred forty-one thousand, nineteen".