11775055217 has 8 divisors (see below), whose sum is σ = 11814993216. Its totient is φ = 11735181072.

The previous prime is 11775055207. The next prime is 11775055247. The reversal of 11775055217 is 71255057711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11775055217 - 2⁸ = 11775054961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11775055207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369023 + ... + 399659.

It is an arithmetic number, because the mean of its divisors is an integer number (1476874152).

Almost surely, 2^11775055217 is an apocalyptic number.

It is an amenable number.

11775055217 is a deficient number, since it is larger than the sum of its proper divisors (39937999).

11775055217 is an equidigital number, since it uses as much as digits as its factorization.

11775055217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31927.

The product of its (nonzero) digits is 85750, while the sum is 41.

The spelling of 11775055217 in words is "eleven billion, seven hundred seventy-five million, fifty-five thousand, two hundred seventeen".