11164997761 has 2 divisors, whose sum is σ = 11164997762. Its totient is φ = 11164997760.

The previous prime is 11164997743. The next prime is 11164997771. The reversal of 11164997761 is 16779946111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8345918736 + 2819079025 = 91356^2 + 53095^2 .

It is a cyclic number.

It is not a de Polignac number, because 11164997761 - 2⁷ = 11164997633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11164997699 and 11164997708.

It is not a weakly prime, because it can be changed into another prime (11164997771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5582498880 + 5582498881.

It is an arithmetic number, because the mean of its divisors is an integer number (5582498881).

Almost surely, 2^11164997761 is an apocalyptic number.

It is an amenable number.

11164997761 is a deficient number, since it is larger than the sum of its proper divisors (1).

11164997761 is an equidigital number, since it uses as much as digits as its factorization.

11164997761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 52.

The spelling of 11164997761 in words is "eleven billion, one hundred sixty-four million, nine hundred ninety-seven thousand, seven hundred sixty-one".