12178048117 has 2 divisors, whose sum is σ = 12178048118. Its totient is φ = 12178048116.

The previous prime is 12178048111. The next prime is 12178048147. The reversal of 12178048117 is 71184087121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12118927396 + 59120721 = 110086^2 + 7689^2 .

It is a cyclic number.

It is not a de Polignac number, because 12178048117 - 2³ = 12178048109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12178048117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12178048111) by changing a digit.

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 as a sum of consecutive naturals, namely, 6089024058 + 6089024059.

It is an arithmetic number, because the mean of its divisors is an integer number (6089024059).

Almost surely, 2^12178048117 is an apocalyptic number.

It is an amenable number.

12178048117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12178048117 is an equidigital number, since it uses as much as digits as its factorization.

12178048117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 40.

The spelling of 12178048117 in words is "twelve billion, one hundred seventy-eight million, forty-eight thousand, one hundred seventeen".