35440441661 has 2 divisors, whose sum is σ = 35440441662. Its totient is φ = 35440441660.

The previous prime is 35440441639. The next prime is 35440441669. The reversal of 35440441661 is 16614404453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23273028025 + 12167413636 = 152555^2 + 110306^2 .

It is a cyclic number.

It is not a de Polignac number, because 35440441661 - 2³⁰ = 34366699837 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 (35440441669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17720220830 + 17720220831.

It is an arithmetic number, because the mean of its divisors is an integer number (17720220831).

Almost surely, 2^35440441661 is an apocalyptic number.

It is an amenable number.

35440441661 is a deficient number, since it is larger than the sum of its proper divisors (1).

35440441661 is an equidigital number, since it uses as much as digits as its factorization.

35440441661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 35440441661 in words is "thirty-five billion, four hundred forty million, four hundred forty-one thousand, six hundred sixty-one".