11351784161 has 2 divisors, whose sum is σ = 11351784162. Its totient is φ = 11351784160.

The previous prime is 11351784151. The next prime is 11351784239. The reversal of 11351784161 is 16148715311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9411910225 + 1939873936 = 97015^2 + 44044^2 .

It is a cyclic number.

It is not a de Polignac number, because 11351784161 - 2¹⁰ = 11351783137 is a prime.

It is not a weakly prime, because it can be changed into another prime (11351784121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5675892080 + 5675892081.

It is an arithmetic number, because the mean of its divisors is an integer number (5675892081).

Almost surely, 2^11351784161 is an apocalyptic number.

It is an amenable number.

11351784161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11351784161 is an equidigital number, since it uses as much as digits as its factorization.

11351784161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 38.

The spelling of 11351784161 in words is "eleven billion, three hundred fifty-one million, seven hundred eighty-four thousand, one hundred sixty-one".