12163820845 has 48 divisors (see below), whose sum is σ = 16374576960. Its totient is φ = 8665367040.

The previous prime is 12163820831. The next prime is 12163820849. The reversal of 12163820845 is 54802836121.

It is a de Polignac number, because none of the positive numbers 2^k-12163820845 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12163820798 and 12163820807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12163820849) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15455542 + ... + 15456328.

It is an arithmetic number, because the mean of its divisors is an integer number (341137020).

Almost surely, 2^12163820845 is an apocalyptic number.

It is an amenable number.

12163820845 is a deficient number, since it is larger than the sum of its proper divisors (4210756115).

12163820845 is a wasteful number, since it uses less digits than its factorization.

12163820845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 12163820845 in words is "twelve billion, one hundred sixty-three million, eight hundred twenty thousand, eight hundred forty-five".