43145552791 has 32 divisors (see below), whose sum is σ = 48007904256. Its totient is φ = 38449920000.

The previous prime is 43145552789. The next prime is 43145552803. The reversal of 43145552791 is 19725554134.

It is a cyclic number.

It is not a de Polignac number, because 43145552791 - 2¹ = 43145552789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43145553791) 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 31 ways as a sum of consecutive naturals, for example, 66685230 + ... + 66685876.

It is an arithmetic number, because the mean of its divisors is an integer number (1500247008).

Almost surely, 2^43145552791 is an apocalyptic number.

43145552791 is a deficient number, since it is larger than the sum of its proper divisors (4862351465).

43145552791 is a wasteful number, since it uses less digits than its factorization.

43145552791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263.

The product of its digits is 756000, while the sum is 46.

The spelling of 43145552791 in words is "forty-three billion, one hundred forty-five million, five hundred fifty-two thousand, seven hundred ninety-one".