40666950413 has 2 divisors, whose sum is σ = 40666950414. Its totient is φ = 40666950412.

The previous prime is 40666950349. The next prime is 40666950427. The reversal of 40666950413 is 31405966604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33978654889 + 6688295524 = 184333^2 + 81782^2 .

It is a cyclic number.

It is not a de Polignac number, because 40666950413 - 2⁶ = 40666950349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40666950433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20333475206 + 20333475207.

It is an arithmetic number, because the mean of its divisors is an integer number (20333475207).

Almost surely, 2^40666950413 is an apocalyptic number.

It is an amenable number.

40666950413 is a deficient number, since it is larger than the sum of its proper divisors (1).

40666950413 is an equidigital number, since it uses as much as digits as its factorization.

40666950413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 40666950413 in words is "forty billion, six hundred sixty-six million, nine hundred fifty thousand, four hundred thirteen".