1544402242543 has 2 divisors, whose sum is σ = 1544402242544. Its totient is φ = 1544402242542.

The previous prime is 1544402242433. The next prime is 1544402242609. The reversal of 1544402242543 is 3452422044451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1544402242543 - 2¹³ = 1544402234351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1544402242496 and 1544402242505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1544402242343) 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, 772201121271 + 772201121272.

It is an arithmetic number, because the mean of its divisors is an integer number (772201121272).

Almost surely, 2^{1544402242543} is an apocalyptic number.

1544402242543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1544402242543 is an equidigital number, since it uses as much as digits as its factorization.

1544402242543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 614400, while the sum is 40.

Adding to 1544402242543 its reverse (3452422044451), we get a palindrome (4996824286994).

The spelling of 1544402242543 in words is "one trillion, five hundred forty-four billion, four hundred two million, two hundred forty-two thousand, five hundred forty-three".