278378873872 has 20 divisors (see below), whose sum is σ = 588391711056. Its totient is φ = 126535851680.

The previous prime is 278378873833. The next prime is 278378873881.

It is a happy number.

278378873872 is nontrivially palindromic in base 10.

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 3 ways as a sum of consecutive naturals, for example, 790848898 + ... + 790849249.

Almost surely, 2^278378873872 is an apocalyptic number.

278378873872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

278378873872 is an abundant number, since it is smaller than the sum of its proper divisors (310012837184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

278378873872 is a wasteful number, since it uses less digits than its factorization.

278378873872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581698166 (or 1581698160 counting only the distinct ones).

The product of its digits is 354041856, while the sum is 70.

The spelling of 278378873872 in words is "two hundred seventy-eight billion, three hundred seventy-eight million, eight hundred seventy-three thousand, eight hundred seventy-two".