12195657996 has 12 divisors (see below), whose sum is σ = 28456535352. Its totient is φ = 4065219328.

The previous prime is 12195657961. The next prime is 12195658019. The reversal of 12195657996 is 69975659121.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508152405 + ... + 508152428.

It is an arithmetic number, because the mean of its divisors is an integer number (2371377946).

Almost surely, 2^12195657996 is an apocalyptic number.

It is an amenable number.

12195657996 is an abundant number, since it is smaller than the sum of its proper divisors (16260877356).

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

12195657996 is a wasteful number, since it uses less digits than its factorization.

12195657996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016304840 (or 1016304838 counting only the distinct ones).

The product of its digits is 9185400, while the sum is 60.

The spelling of 12195657996 in words is "twelve billion, one hundred ninety-five million, six hundred fifty-seven thousand, nine hundred ninety-six".