12161338367 has 4 divisors (see below), whose sum is σ = 12307860600. Its totient is φ = 12014816136.

The previous prime is 12161338363. The next prime is 12161338373. The reversal of 12161338367 is 76383316121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76383316121 = 7 ⋅10911902303.

It is a cyclic number.

It is not a de Polignac number, because 12161338367 - 2² = 12161338363 is a prime.

It is a super-4 number, since 4×12161338367⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161338363) 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, 73260992 + ... + 73261157.

It is an arithmetic number, because the mean of its divisors is an integer number (3076965150).

Almost surely, 2^12161338367 is an apocalyptic number.

12161338367 is a deficient number, since it is larger than the sum of its proper divisors (146522233).

12161338367 is an equidigital number, since it uses as much as digits as its factorization.

12161338367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146522232.

The product of its digits is 108864, while the sum is 41.

The spelling of 12161338367 in words is "twelve billion, one hundred sixty-one million, three hundred thirty-eight thousand, three hundred sixty-seven".