12117563567278 has 16 divisors (see below), whose sum is σ = 19764569706336. Its totient is φ = 5538423376800.

The previous prime is 12117563567177. The next prime is 12117563567297. The reversal of 12117563567278 is 87276536571121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2262425173 + ... + 2262430528.

It is an arithmetic number, because the mean of its divisors is an integer number (1235285606646).

Almost surely, 2^{12117563567278} is an apocalyptic number.

12117563567278 is a deficient number, since it is larger than the sum of its proper divisors (7647006139058).

12117563567278 is a wasteful number, since it uses less digits than its factorization.

12117563567278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524855819.

The product of its digits is 29635200, while the sum is 61.

The spelling of 12117563567278 in words is "twelve trillion, one hundred seventeen billion, five hundred sixty-three million, five hundred sixty-seven thousand, two hundred seventy-eight".