243245000545 has 4 divisors (see below), whose sum is σ = 291894000660. Its totient is φ = 194596000432.

The previous prime is 243245000513. The next prime is 243245000573. The reversal of 243245000545 is 545000542342.

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

It can be written as a sum of positive squares in 2 ways, for example, as 186339852241 + 56905148304 = 431671^2 + 238548^2 .

It is a cyclic number.

It is not a de Polignac number, because 243245000545 - 2⁵ = 243245000513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243245000545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24324500050 + ... + 24324500059.

It is an arithmetic number, because the mean of its divisors is an integer number (72973500165).

Almost surely, 2^243245000545 is an apocalyptic number.

It is an amenable number.

243245000545 is a deficient number, since it is larger than the sum of its proper divisors (48649000115).

243245000545 is an equidigital number, since it uses as much as digits as its factorization.

243245000545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48649000114.

The product of its (nonzero) digits is 96000, while the sum is 34.

Adding to 243245000545 its reverse (545000542342), we get a palindrome (788245542887).

The spelling of 243245000545 in words is "two hundred forty-three billion, two hundred forty-five million, five hundred forty-five", and thus it is an aban number.