40111000997 has 2 divisors, whose sum is σ = 40111000998. Its totient is φ = 40111000996.

The previous prime is 40111000939. The next prime is 40111001003. The reversal of 40111000997 is 79900011104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33269395201 + 6841605796 = 182399^2 + 82714^2 .

It is a cyclic number.

It is not a de Polignac number, because 40111000997 - 2¹⁶ = 40110935461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40111000297) 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 as a sum of consecutive naturals, namely, 20055500498 + 20055500499.

It is an arithmetic number, because the mean of its divisors is an integer number (20055500499).

Almost surely, 2^40111000997 is an apocalyptic number.

It is an amenable number.

40111000997 is a deficient number, since it is larger than the sum of its proper divisors (1).

40111000997 is an equidigital number, since it uses as much as digits as its factorization.

40111000997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 40111000997 in words is "forty billion, one hundred eleven million, nine hundred ninety-seven", and thus it is an aban number.