11366047181 has 2 divisors, whose sum is σ = 11366047182. Its totient is φ = 11366047180.

The previous prime is 11366047159. The next prime is 11366047211. The reversal of 11366047181 is 18174066311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10954971556 + 411075625 = 104666^2 + 20275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11366047181 is a prime.

It is a super-2 number, since 2×11366047181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11366047481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5683023590 + 5683023591.

It is an arithmetic number, because the mean of its divisors is an integer number (5683023591).

Almost surely, 2^11366047181 is an apocalyptic number.

It is an amenable number.

11366047181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11366047181 is an equidigital number, since it uses as much as digits as its factorization.

11366047181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 11366047181 in words is "eleven billion, three hundred sixty-six million, forty-seven thousand, one hundred eighty-one".