17741952661 has 2 divisors, whose sum is σ = 17741952662. Its totient is φ = 17741952660.

The previous prime is 17741952583. The next prime is 17741952667. The reversal of 17741952661 is 16625914771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17740641636 + 1311025 = 133194^2 + 1145^2 .

It is a cyclic number.

It is not a de Polignac number, because 17741952661 - 2¹¹ = 17741950613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17741952667) 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, 8870976330 + 8870976331.

It is an arithmetic number, because the mean of its divisors is an integer number (8870976331).

Almost surely, 2^17741952661 is an apocalyptic number.

It is an amenable number.

17741952661 is a deficient number, since it is larger than the sum of its proper divisors (1).

17741952661 is an equidigital number, since it uses as much as digits as its factorization.

17741952661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 49.

The spelling of 17741952661 in words is "seventeen billion, seven hundred forty-one million, nine hundred fifty-two thousand, six hundred sixty-one".