40466768393 has 2 divisors, whose sum is σ = 40466768394. Its totient is φ = 40466768392.

The previous prime is 40466768359. The next prime is 40466768411. The reversal of 40466768393 is 39386766404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37957559929 + 2509208464 = 194827^2 + 50092^2 .

It is a cyclic number.

It is not a de Polignac number, because 40466768393 - 2²⁴ = 40449991177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40466768323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20233384196 + 20233384197.

It is an arithmetic number, because the mean of its divisors is an integer number (20233384197).

Almost surely, 2^40466768393 is an apocalyptic number.

It is an amenable number.

40466768393 is a deficient number, since it is larger than the sum of its proper divisors (1).

40466768393 is an equidigital number, since it uses as much as digits as its factorization.

40466768393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15676416, while the sum is 56.

The spelling of 40466768393 in words is "forty billion, four hundred sixty-six million, seven hundred sixty-eight thousand, three hundred ninety-three".