12195480367789 has 4 divisors (see below), whose sum is σ = 12332508237180. Its totient is φ = 12058452498400.

The previous prime is 12195480367783. The next prime is 12195480367799. The reversal of 12195480367789 is 98776308459121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4512926653225 + 7682553714564 = 2124365^2 + 2771742^2 .

It is a cyclic number.

It is not a de Polignac number, because 12195480367789 - 2¹⁷ = 12195480236717 is a prime.

It is a super-2 number, since 2×12195480367789² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12195480367783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68513934562 + ... + 68513934739.

It is an arithmetic number, because the mean of its divisors is an integer number (3083127059295).

It is a 1-persistent number, because it is pandigital, but 2⋅12195480367789 = 24390960735578 is not.

Almost surely, 2^{12195480367789} is an apocalyptic number.

It is an amenable number.

12195480367789 is a deficient number, since it is larger than the sum of its proper divisors (137027869391).

12195480367789 is an equidigital number, since it uses as much as digits as its factorization.

12195480367789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137027869390.

The product of its (nonzero) digits is 182891520, while the sum is 70.

The spelling of 12195480367789 in words is "twelve trillion, one hundred ninety-five billion, four hundred eighty million, three hundred sixty-seven thousand, seven hundred eighty-nine".