12168840545 has 16 divisors (see below), whose sum is σ = 14882875200. Its totient is φ = 9548345664.

The previous prime is 12168840517. The next prime is 12168840557. The reversal of 12168840545 is 54504886121.

It is a cyclic number.

It is not a de Polignac number, because 12168840545 - 2⁸ = 12168840289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12168840496 and 12168840505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1199906 + ... + 1210004.

It is an arithmetic number, because the mean of its divisors is an integer number (930179700).

Almost surely, 2^12168840545 is an apocalyptic number.

It is an amenable number.

12168840545 is a deficient number, since it is larger than the sum of its proper divisors (2714034655).

12168840545 is a wasteful number, since it uses less digits than its factorization.

12168840545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14704.

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 12168840545 in words is "twelve billion, one hundred sixty-eight million, eight hundred forty thousand, five hundred forty-five".