11772079171 has 4 divisors (see below), whose sum is σ = 11792696344. Its totient is φ = 11751462000.

The previous prime is 11772079141. The next prime is 11772079181. The reversal of 11772079171 is 17197027711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11772079171 - 2²¹ = 11769982019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11772079141) 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 3 ways as a sum of consecutive naturals, for example, 10307730 + ... + 10308871.

It is an arithmetic number, because the mean of its divisors is an integer number (2948174086).

Almost surely, 2^11772079171 is an apocalyptic number.

11772079171 is a deficient number, since it is larger than the sum of its proper divisors (20617173).

11772079171 is an equidigital number, since it uses as much as digits as its factorization.

11772079171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20617172.

The product of its (nonzero) digits is 43218, while the sum is 43.

The spelling of 11772079171 in words is "eleven billion, seven hundred seventy-two million, seventy-nine thousand, one hundred seventy-one".