12161406343 has 4 divisors (see below), whose sum is σ = 12174756768. Its totient is φ = 12148055920.

The previous prime is 12161406289. The next prime is 12161406391. The reversal of 12161406343 is 34360416121.

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: 34360416121 = 40129 ⋅856249.

It is a cyclic number.

It is not a de Polignac number, because 12161406343 - 2²⁹ = 11624535431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161406143) 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, 6673846 + ... + 6675667.

It is an arithmetic number, because the mean of its divisors is an integer number (3043689192).

Almost surely, 2^12161406343 is an apocalyptic number.

12161406343 is a deficient number, since it is larger than the sum of its proper divisors (13350425).

12161406343 is an equidigital number, since it uses as much as digits as its factorization.

12161406343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13350424.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 12161406343 in words is "twelve billion, one hundred sixty-one million, four hundred six thousand, three hundred forty-three".