43223112545 has 4 divisors (see below), whose sum is σ = 51867735060. Its totient is φ = 34578490032.

The previous prime is 43223112529. The next prime is 43223112557. The reversal of 43223112545 is 54521132234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54521132234 = 2 ⋅27260566117.

It can be written as a sum of positive squares in 2 ways, for example, as 27485660944 + 15737451601 = 165788^2 + 125449^2 .

It is a cyclic number.

It is not a de Polignac number, because 43223112545 - 2⁴ = 43223112529 is a prime.

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, 4322311250 + ... + 4322311259.

It is an arithmetic number, because the mean of its divisors is an integer number (12966933765).

Almost surely, 2^43223112545 is an apocalyptic number.

It is an amenable number.

43223112545 is a deficient number, since it is larger than the sum of its proper divisors (8644622515).

43223112545 is an equidigital number, since it uses as much as digits as its factorization.

43223112545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8644622514.

The product of its digits is 28800, while the sum is 32.

Adding to 43223112545 its reverse (54521132234), we get a palindrome (97744244779).

The spelling of 43223112545 in words is "forty-three billion, two hundred twenty-three million, one hundred twelve thousand, five hundred forty-five".