545991541493 has 2 divisors, whose sum is σ = 545991541494. Its totient is φ = 545991541492.

The previous prime is 545991541471. The next prime is 545991541507. The reversal of 545991541493 is 394145199545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 506377406404 + 39614135089 = 711602^2 + 199033^2 .

It is a cyclic number.

It is not a de Polignac number, because 545991541493 - 2⁸ = 545991541237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545991541463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272995770746 + 272995770747.

It is an arithmetic number, because the mean of its divisors is an integer number (272995770747).

Almost surely, 2^545991541493 is an apocalyptic number.

It is an amenable number.

545991541493 is a deficient number, since it is larger than the sum of its proper divisors (1).

545991541493 is an equidigital number, since it uses as much as digits as its factorization.

545991541493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496000, while the sum is 59.

The spelling of 545991541493 in words is "five hundred forty-five billion, nine hundred ninety-one million, five hundred forty-one thousand, four hundred ninety-three".