11449173409 has 2 divisors, whose sum is σ = 11449173410. Its totient is φ = 11449173408.

The previous prime is 11449173377. The next prime is 11449173419. The reversal of 11449173409 is 90437194411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8368590400 + 3080583009 = 91480^2 + 55503^2 .

It is a cyclic number.

It is not a de Polignac number, because 11449173409 - 2⁵ = 11449173377 is a prime.

It is not a weakly prime, because it can be changed into another prime (11449173419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5724586704 + 5724586705.

It is an arithmetic number, because the mean of its divisors is an integer number (5724586705).

Almost surely, 2^11449173409 is an apocalyptic number.

It is an amenable number.

11449173409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11449173409 is an equidigital number, since it uses as much as digits as its factorization.

11449173409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 11449173409 in words is "eleven billion, four hundred forty-nine million, one hundred seventy-three thousand, four hundred nine".