11185496081 has 2 divisors, whose sum is σ = 11185496082. Its totient is φ = 11185496080.

The previous prime is 11185496053. The next prime is 11185496123. The reversal of 11185496081 is 18069458111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10217975056 + 967521025 = 101084^2 + 31105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11185496081 is a prime.

It is a super-2 number, since 2×11185496081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11185436081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5592748040 + 5592748041.

It is an arithmetic number, because the mean of its divisors is an integer number (5592748041).

Almost surely, 2^11185496081 is an apocalyptic number.

It is an amenable number.

11185496081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11185496081 is an equidigital number, since it uses as much as digits as its factorization.

11185496081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 44.

The spelling of 11185496081 in words is "eleven billion, one hundred eighty-five million, four hundred ninety-six thousand, eighty-one".