12665378701892 has 48 divisors (see below), whose sum is σ = 25463069708160. Its totient is φ = 5399669164032.

The previous prime is 12665378701891. The next prime is 12665378701901. The reversal of 12665378701892 is 29810787356621.

It is not an unprimeable number, because it can be changed into a prime (12665378701891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223627034 + ... + 223683662.

It is an arithmetic number, because the mean of its divisors is an integer number (530480618920).

Almost surely, 2^{12665378701892} is an apocalyptic number.

It is an amenable number.

12665378701892 is an abundant number, since it is smaller than the sum of its proper divisors (12797691006268).

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

12665378701892 is a wasteful number, since it uses less digits than its factorization.

12665378701892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98220 (or 98218 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 12665378701892 in words is "twelve trillion, six hundred sixty-five billion, three hundred seventy-eight million, seven hundred one thousand, eight hundred ninety-two".