11741545661 has 2 divisors, whose sum is σ = 11741545662. Its totient is φ = 11741545660.

The previous prime is 11741545559. The next prime is 11741545679. The reversal of 11741545661 is 16654514711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7756148761 + 3985396900 = 88069^2 + 63130^2 .

It is a cyclic number.

It is not a de Polignac number, because 11741545661 - 2¹⁸ = 11741283517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11741545961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5870772830 + 5870772831.

It is an arithmetic number, because the mean of its divisors is an integer number (5870772831).

Almost surely, 2^11741545661 is an apocalyptic number.

It is an amenable number.

11741545661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11741545661 is an equidigital number, since it uses as much as digits as its factorization.

11741545661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 41.

The spelling of 11741545661 in words is "eleven billion, seven hundred forty-one million, five hundred forty-five thousand, six hundred sixty-one".