278180318113 has 2 divisors, whose sum is σ = 278180318114. Its totient is φ = 278180318112.

The previous prime is 278180318021. The next prime is 278180318123. The reversal of 278180318113 is 311813081872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261619974144 + 16560343969 = 511488^2 + 128687^2 .

It is a cyclic number.

It is not a de Polignac number, because 278180318113 - 2⁹ = 278180317601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 278180318113.

It is not a weakly prime, because it can be changed into another prime (278180318123) 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 as a sum of consecutive naturals, namely, 139090159056 + 139090159057.

It is an arithmetic number, because the mean of its divisors is an integer number (139090159057).

Almost surely, 2^278180318113 is an apocalyptic number.

It is an amenable number.

278180318113 is a deficient number, since it is larger than the sum of its proper divisors (1).

278180318113 is an equidigital number, since it uses as much as digits as its factorization.

278180318113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 43.

Adding to 278180318113 its reverse (311813081872), we get a palindrome (589993399985).

The spelling of 278180318113 in words is "two hundred seventy-eight billion, one hundred eighty million, three hundred eighteen thousand, one hundred thirteen".