278116489228 has 48 divisors (see below), whose sum is σ = 519475420800. Its totient is φ = 129828015360.

The previous prime is 278116489213. The next prime is 278116489267. The reversal of 278116489228 is 822984611872.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11888383 + ... + 11911753.

It is an arithmetic number, because the mean of its divisors is an integer number (10822404600).

Almost surely, 2^278116489228 is an apocalyptic number.

It is an amenable number.

278116489228 is a deficient number, since it is larger than the sum of its proper divisors (241358931572).

278116489228 is a wasteful number, since it uses less digits than its factorization.

278116489228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24790 (or 24788 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 58.

The spelling of 278116489228 in words is "two hundred seventy-eight billion, one hundred sixteen million, four hundred eighty-nine thousand, two hundred twenty-eight".