40043423263 has 8 divisors (see below), whose sum is σ = 40940543232. Its totient is φ = 39148183896.

The previous prime is 40043423249. The next prime is 40043423291. The reversal of 40043423263 is 36232434004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40043423263 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 (40043423963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427045 + ... + 512302.

It is an arithmetic number, because the mean of its divisors is an integer number (5117567904).

Almost surely, 2^40043423263 is an apocalyptic number.

40043423263 is a deficient number, since it is larger than the sum of its proper divisors (897119969).

40043423263 is an equidigital number, since it uses as much as digits as its factorization.

40043423263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940301.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 40043423263 its reverse (36232434004), we get a palindrome (76275857267).

The spelling of 40043423263 in words is "forty billion, forty-three million, four hundred twenty-three thousand, two hundred sixty-three".