11361886661 has 2 divisors, whose sum is σ = 11361886662. Its totient is φ = 11361886660.

The previous prime is 11361886631. The next prime is 11361886681. The reversal of 11361886661 is 16668816311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10739384161 + 622502500 = 103631^2 + 24950^2 .

It is a cyclic number.

It is not a de Polignac number, because 11361886661 - 2¹⁸ = 11361624517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11361886621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5680943330 + 5680943331.

It is an arithmetic number, because the mean of its divisors is an integer number (5680943331).

Almost surely, 2^11361886661 is an apocalyptic number.

It is an amenable number.

11361886661 is a deficient number, since it is larger than the sum of its proper divisors (1).

11361886661 is an equidigital number, since it uses as much as digits as its factorization.

11361886661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 47.

The spelling of 11361886661 in words is "eleven billion, three hundred sixty-one million, eight hundred eighty-six thousand, six hundred sixty-one".