1154791617209 has 12 divisors (see below), whose sum is σ = 1207236455796. Its totient is φ = 1104534300672.

The previous prime is 1154791617191. The next prime is 1154791617227. The reversal of 1154791617209 is 9027161974511.

It is an interprime number because it is at equal distance from previous prime (1154791617191) and next prime (1154791617227).

It can be written as a sum of positive squares in 2 ways, for example, as 1049247851584 + 105543765625 = 1024328^2 + 324875^2 .

It is not a de Polignac number, because 1154791617209 - 2²⁴ = 1154774839993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1154791617289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18882809 + ... + 18943865.

It is an arithmetic number, because the mean of its divisors is an integer number (100603037983).

Almost surely, 2^{1154791617209} is an apocalyptic number.

It is an amenable number.

1154791617209 is a deficient number, since it is larger than the sum of its proper divisors (52444838587).

1154791617209 is an equidigital number, since it uses as much as digits as its factorization.

1154791617209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96856 (or 96833 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 53.

The spelling of 1154791617209 in words is "one trillion, one hundred fifty-four billion, seven hundred ninety-one million, six hundred seventeen thousand, two hundred nine".