40845047243 has 16 divisors (see below), whose sum is σ = 54840903936. Its totient is φ = 29379054240.

The previous prime is 40845047233. The next prime is 40845047261. The reversal of 40845047243 is 34274054804.

It is a cyclic number.

It is not a de Polignac number, because 40845047243 - 2¹⁰ = 40845046219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40845047243.

It is not an unprimeable number, because it can be changed into a prime (40845047233) 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 15 ways as a sum of consecutive naturals, for example, 20401121 + ... + 20403122.

It is an arithmetic number, because the mean of its divisors is an integer number (3427556496).

Almost surely, 2^40845047243 is an apocalyptic number.

40845047243 is a deficient number, since it is larger than the sum of its proper divisors (13995856693).

40845047243 is a wasteful number, since it uses less digits than its factorization.

40845047243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40804274.

The product of its (nonzero) digits is 430080, while the sum is 41.

The spelling of 40845047243 in words is "forty billion, eight hundred forty-five million, forty-seven thousand, two hundred forty-three".