11505161149 has 2 divisors, whose sum is σ = 11505161150. Its totient is φ = 11505161148.

The previous prime is 11505161147. The next prime is 11505161191. The reversal of 11505161149 is 94116150511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10791469924 + 713691225 = 103882^2 + 26715^2 .

It is a cyclic number.

It is not a de Polignac number, because 11505161149 - 2¹ = 11505161147 is a prime.

Together with 11505161147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11505161147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752580574 + 5752580575.

It is an arithmetic number, because the mean of its divisors is an integer number (5752580575).

Almost surely, 2^11505161149 is an apocalyptic number.

It is an amenable number.

11505161149 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505161149 is an equidigital number, since it uses as much as digits as its factorization.

11505161149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 34.

The spelling of 11505161149 in words is "eleven billion, five hundred five million, one hundred sixty-one thousand, one hundred forty-nine".