11671486161 has 4 divisors (see below), whose sum is σ = 15561981552. Its totient is φ = 7780990772.

The previous prime is 11671486139. The next prime is 11671486163. The reversal of 11671486161 is 16168417611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16168417611 = 3 ⋅5389472537.

It is a cyclic number.

It is not a de Polignac number, because 11671486161 - 2¹⁷ = 11671355089 is a prime.

It is a super-3 number, since 3×11671486161³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (11671486163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1945247691 + ... + 1945247696.

It is an arithmetic number, because the mean of its divisors is an integer number (3890495388).

Almost surely, 2^11671486161 is an apocalyptic number.

It is an amenable number.

11671486161 is a deficient number, since it is larger than the sum of its proper divisors (3890495391).

11671486161 is an equidigital number, since it uses as much as digits as its factorization.

11671486161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890495390.

The product of its digits is 48384, while the sum is 42.

The spelling of 11671486161 in words is "eleven billion, six hundred seventy-one million, four hundred eighty-six thousand, one hundred sixty-one".