545513042243 has 4 divisors (see below), whose sum is σ = 587475583968. Its totient is φ = 503550500520.

The previous prime is 545513042237. The next prime is 545513042317. The reversal of 545513042243 is 342240315545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545513042243 - 2⁴ = 545513042227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545513042197 and 545513042206.

It is not an unprimeable number, because it can be changed into a prime (545513042203) 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 in 3 ways as a sum of consecutive naturals, for example, 20981270843 + ... + 20981270868.

It is an arithmetic number, because the mean of its divisors is an integer number (146868895992).

Almost surely, 2^545513042243 is an apocalyptic number.

545513042243 is a deficient number, since it is larger than the sum of its proper divisors (41962541725).

545513042243 is a wasteful number, since it uses less digits than its factorization.

545513042243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41962541724.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 545513042243 its reverse (342240315545), we get a palindrome (887753357788).

The spelling of 545513042243 in words is "five hundred forty-five billion, five hundred thirteen million, forty-two thousand, two hundred forty-three".