12081806343 has 20 divisors (see below), whose sum is σ = 18095796840. Its totient is φ = 8033265072.

The previous prime is 12081806333. The next prime is 12081806351. The reversal of 12081806343 is 34360818021.

12081806343 is a `hidden beast` number, since 1 + 2 + 0 + 8 + 18 + 0 + 634 + 3 = 666.

It is not a de Polignac number, because 12081806343 - 2¹⁶ = 12081740807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12081806298 and 12081806307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12081806333) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 166080 + ... + 227477.

It is an arithmetic number, because the mean of its divisors is an integer number (904789842).

Almost surely, 2^12081806343 is an apocalyptic number.

12081806343 is a deficient number, since it is larger than the sum of its proper divisors (6013990497).

12081806343 is an equidigital number, since it uses as much as digits as its factorization.

12081806343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393948 (or 393939 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 12081806343 in words is "twelve billion, eighty-one million, eight hundred six thousand, three hundred forty-three".