11971761171 has 8 divisors (see below), whose sum is σ = 15962860944. Its totient is φ = 7980917760.

The previous prime is 11971761127. The next prime is 11971761203. The reversal of 11971761171 is 17116717911.

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

It is not a de Polignac number, because 11971761171 - 2¹³ = 11971752979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11971761271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122395 + ... + 197291.

It is an arithmetic number, because the mean of its divisors is an integer number (1995357618).

Almost surely, 2^11971761171 is an apocalyptic number.

11971761171 is a deficient number, since it is larger than the sum of its proper divisors (3991099773).

11971761171 is an equidigital number, since it uses as much as digits as its factorization.

11971761171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128181.

The product of its digits is 18522, while the sum is 42.

The spelling of 11971761171 in words is "eleven billion, nine hundred seventy-one million, seven hundred sixty-one thousand, one hundred seventy-one".