43243132449 has 32 divisors (see below), whose sum is σ = 64387090944. Its totient is φ = 25588442880.

The previous prime is 43243132447. The next prime is 43243132453. The reversal of 43243132449 is 94423134234.

It is not a de Polignac number, because 43243132449 - 2¹ = 43243132447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43243132447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5241922 + ... + 5250164.

It is an arithmetic number, because the mean of its divisors is an integer number (2012096592).

Almost surely, 2^43243132449 is an apocalyptic number.

It is an amenable number.

43243132449 is a deficient number, since it is larger than the sum of its proper divisors (21143958495).

43243132449 is a wasteful number, since it uses less digits than its factorization.

43243132449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11997.

The product of its digits is 248832, while the sum is 39.

The spelling of 43243132449 in words is "forty-three billion, two hundred forty-three million, one hundred thirty-two thousand, four hundred forty-nine".