43161233449 has 2 divisors, whose sum is σ = 43161233450. Its totient is φ = 43161233448.

The previous prime is 43161233419. The next prime is 43161233461. The reversal of 43161233449 is 94433216134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43083229225 + 78004224 = 207565^2 + 8832^2 .

It is a cyclic number.

It is not a de Polignac number, because 43161233449 - 2¹³ = 43161225257 is a prime.

It is not a weakly prime, because it can be changed into another prime (43161233419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21580616724 + 21580616725.

It is an arithmetic number, because the mean of its divisors is an integer number (21580616725).

Almost surely, 2^43161233449 is an apocalyptic number.

It is an amenable number.

43161233449 is a deficient number, since it is larger than the sum of its proper divisors (1).

43161233449 is an equidigital number, since it uses as much as digits as its factorization.

43161233449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 40.

The spelling of 43161233449 in words is "forty-three billion, one hundred sixty-one million, two hundred thirty-three thousand, four hundred forty-nine".