12195469144845 has 288 divisors, whose sum is σ = 25767981398016. Its totient is φ = 5315001753600.

The previous prime is 12195469144819. The next prime is 12195469144847. The reversal of 12195469144845 is 54844196459121.

It is a happy number.

12195469144845 is a `hidden beast` number, since 1 + 2 + 1 + 9 + 546 + 9 + 1 + 4 + 4 + 84 + 5 = 666.

It is not a de Polignac number, because 12195469144845 - 2¹¹ = 12195469142797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12195469144847) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1044037405 + ... + 1044049085.

It is an arithmetic number, because the mean of its divisors is an integer number (89472157632).

Almost surely, 2^{12195469144845} is an apocalyptic number.

12195469144845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12195469144845 is an abundant number, since it is smaller than the sum of its proper divisors (13572512253171).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12195469144845 is a wasteful number, since it uses less digits than its factorization.

12195469144845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12001 (or 11991 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 63.

The spelling of 12195469144845 in words is "twelve trillion, one hundred ninety-five billion, four hundred sixty-nine million, one hundred forty-four thousand, eight hundred forty-five".