43645044742 has 32 divisors (see below), whose sum is σ = 74871105120. Its totient is φ = 18914757120.

The previous prime is 43645044733. The next prime is 43645044749. The reversal of 43645044742 is 24744054634.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43645044749) 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 in 15 ways as a sum of consecutive naturals, for example, 335109 + ... + 446752.

It is an arithmetic number, because the mean of its divisors is an integer number (2339722035).

Almost surely, 2^43645044742 is an apocalyptic number.

43645044742 is a deficient number, since it is larger than the sum of its proper divisors (31226060378).

43645044742 is a wasteful number, since it uses less digits than its factorization.

43645044742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782008.

The product of its (nonzero) digits is 1290240, while the sum is 43.

The spelling of 43645044742 in words is "forty-three billion, six hundred forty-five million, forty-four thousand, seven hundred forty-two".