40644334205417 has 2 divisors, whose sum is σ = 40644334205418. Its totient is φ = 40644334205416.

The previous prime is 40644334205399. The next prime is 40644334205437. The reversal of 40644334205417 is 71450243344604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33933234650176 + 6711099555241 = 5825224^2 + 2590579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40644334205417 is a prime.

It is not a weakly prime, because it can be changed into another prime (40644334205437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20322167102708 + 20322167102709.

It is an arithmetic number, because the mean of its divisors is an integer number (20322167102709).

Almost surely, 2^{40644334205417} is an apocalyptic number.

It is an amenable number.

40644334205417 is a deficient number, since it is larger than the sum of its proper divisors (1).

40644334205417 is an equidigital number, since it uses as much as digits as its factorization.

40644334205417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 47.

The spelling of 40644334205417 in words is "forty trillion, six hundred forty-four billion, three hundred thirty-four million, two hundred five thousand, four hundred seventeen".