11801179171 has 2 divisors, whose sum is σ = 11801179172. Its totient is φ = 11801179170.

The previous prime is 11801179141. The next prime is 11801179213. The reversal of 11801179171 is 17197110811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11801179171 - 2⁹ = 11801178659 is a prime.

It is a super-4 number, since 4×11801179171⁴ (a number of 41 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11801179171.

It is not a weakly prime, because it can be changed into another prime (11801179141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5900589585 + 5900589586.

It is an arithmetic number, because the mean of its divisors is an integer number (5900589586).

Almost surely, 2^11801179171 is an apocalyptic number.

11801179171 is a deficient number, since it is larger than the sum of its proper divisors (1).

11801179171 is an equidigital number, since it uses as much as digits as its factorization.

11801179171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 37.

Adding to 11801179171 its reverse (17197110811), we get a palindrome (28998289982).

The spelling of 11801179171 in words is "eleven billion, eight hundred one million, one hundred seventy-nine thousand, one hundred seventy-one".