11817377705 has 32 divisors (see below), whose sum is σ = 17232030720. Its totient is φ = 7594675200.

The previous prime is 11817377699. The next prime is 11817377717. The reversal of 11817377705 is 50777371811.

It is not a de Polignac number, because 11817377705 - 2¹² = 11817373609 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11817377705.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 100655 + ... + 183755.

It is an arithmetic number, because the mean of its divisors is an integer number (538500960).

Almost surely, 2^11817377705 is an apocalyptic number.

It is an amenable number.

11817377705 is a deficient number, since it is larger than the sum of its proper divisors (5414653015).

11817377705 is a wasteful number, since it uses less digits than its factorization.

11817377705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83369.

The product of its (nonzero) digits is 288120, while the sum is 47.

The spelling of 11817377705 in words is "eleven billion, eight hundred seventeen million, three hundred seventy-seven thousand, seven hundred five".