40091611793 has 2 divisors, whose sum is σ = 40091611794. Its totient is φ = 40091611792.

The previous prime is 40091611771. The next prime is 40091611801. The reversal of 40091611793 is 39711619004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38487769489 + 1603842304 = 196183^2 + 40048^2 .

It is a cyclic number.

It is not a de Polignac number, because 40091611793 - 2¹² = 40091607697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40091611793.

It is not a weakly prime, because it can be changed into another prime (40091611723) 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, 20045805896 + 20045805897.

It is an arithmetic number, because the mean of its divisors is an integer number (20045805897).

Almost surely, 2^40091611793 is an apocalyptic number.

It is an amenable number.

40091611793 is a deficient number, since it is larger than the sum of its proper divisors (1).

40091611793 is an equidigital number, since it uses as much as digits as its factorization.

40091611793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 41.

The spelling of 40091611793 in words is "forty billion, ninety-one million, six hundred eleven thousand, seven hundred ninety-three".