11157244309 has 2 divisors, whose sum is σ = 11157244310. Its totient is φ = 11157244308.

The previous prime is 11157244303. The next prime is 11157244333. The reversal of 11157244309 is 90344275111.

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., 10440343684 + 716900625 = 102178^2 + 26775^2 .

It is a cyclic number.

It is not a de Polignac number, because 11157244309 - 2¹⁹ = 11156720021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11157244303) 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, 5578622154 + 5578622155.

It is an arithmetic number, because the mean of its divisors is an integer number (5578622155).

Almost surely, 2^11157244309 is an apocalyptic number.

It is an amenable number.

11157244309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11157244309 is an equidigital number, since it uses as much as digits as its factorization.

11157244309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 11157244309 in words is "eleven billion, one hundred fifty-seven million, two hundred forty-four thousand, three hundred nine".