40041003491 has 2 divisors, whose sum is σ = 40041003492. Its totient is φ = 40041003490.

The previous prime is 40041003449. The next prime is 40041003517. The reversal of 40041003491 is 19430014004.

It is an a-pointer prime, because the next prime (40041003517) can be obtained adding 40041003491 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40041003491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40041003491.

It is not a weakly prime, because it can be changed into another prime (40041003391) 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 as a sum of consecutive naturals, namely, 20020501745 + 20020501746.

It is an arithmetic number, because the mean of its divisors is an integer number (20020501746).

Almost surely, 2^40041003491 is an apocalyptic number.

40041003491 is a deficient number, since it is larger than the sum of its proper divisors (1).

40041003491 is an equidigital number, since it uses as much as digits as its factorization.

40041003491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 40041003491 its reverse (19430014004), we get a palindrome (59471017495).

The spelling of 40041003491 in words is "forty billion, forty-one million, three thousand, four hundred ninety-one".