40043220243 has 32 divisors (see below), whose sum is σ = 57746981376. Its totient is φ = 24535450368.

The previous prime is 40043220209. The next prime is 40043220251. The reversal of 40043220243 is 34202234004.

It is not a de Polignac number, because 40043220243 - 2¹³ = 40043212051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40043220443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17662396 + ... + 17664662.

It is an arithmetic number, because the mean of its divisors is an integer number (1804593168).

Almost surely, 2^40043220243 is an apocalyptic number.

40043220243 is a deficient number, since it is larger than the sum of its proper divisors (17703761133).

40043220243 is a wasteful number, since it uses less digits than its factorization.

40043220243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 40043220243 its reverse (34202234004), we get a palindrome (74245454247).

The spelling of 40043220243 in words is "forty billion, forty-three million, two hundred twenty thousand, two hundred forty-three".