278888888888888 has 16 divisors (see below), whose sum is σ = 522948453228360. Its totient is φ = 139435968028000.

The previous prime is 278888888888887. The next prime is 278888888888891. The reversal of 278888888888888 is 888888888888872.

278888888888888 is a modest number, since divided by 88888888 gives 2788888 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278888888888887) 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, 1059412223 + ... + 1059675438.

Almost surely, 2^{278888888888888} is an apocalyptic number.

It is an amenable number.

278888888888888 is a deficient number, since it is larger than the sum of its proper divisors (244059564339472).

278888888888888 is a wasteful number, since it uses less digits than its factorization.

278888888888888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119104118 (or 2119104114 counting only the distinct ones).

The product of its digits is 7696581394432, while the sum is 113.

The spelling of 278888888888888 in words is "two hundred seventy-eight trillion, eight hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-eight".