12195108400813 has 16 divisors (see below), whose sum is σ = 13430366320896. Its totient is φ = 11003871228480.

The previous prime is 12195108400793. The next prime is 12195108400817. The reversal of 12195108400813 is 31800480159121.

It is a de Polignac number, because none of the positive numbers 2^k-12195108400813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12195108400813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12195108400817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32469595 + ... + 32843032.

It is an arithmetic number, because the mean of its divisors is an integer number (839397895056).

Almost surely, 2^{12195108400813} is an apocalyptic number.

12195108400813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12195108400813 is a deficient number, since it is larger than the sum of its proper divisors (1235257920083).

12195108400813 is a wasteful number, since it uses less digits than its factorization.

12195108400813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65312964.

The product of its (nonzero) digits is 69120, while the sum is 43.

Adding to 12195108400813 its reverse (31800480159121), we get a palindrome (43995588559934).

The spelling of 12195108400813 in words is "twelve trillion, one hundred ninety-five billion, one hundred eight million, four hundred thousand, eight hundred thirteen".