278970055520 has 48 divisors (see below), whose sum is σ = 709764204240. Its totient is φ = 103004327424.

The previous prime is 278970055517. The next prime is 278970055531. The reversal of 278970055520 is 25550079872.

It is a happy number.

278970055520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 67058030 + ... + 67062189.

It is an arithmetic number, because the mean of its divisors is an integer number (14786754255).

Almost surely, 2^278970055520 is an apocalyptic number.

278970055520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278970055520 is an abundant number, since it is smaller than the sum of its proper divisors (430794148720).

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

278970055520 is a wasteful number, since it uses less digits than its factorization.

278970055520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134120247 (or 134120239 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 50.

The spelling of 278970055520 in words is "two hundred seventy-eight billion, nine hundred seventy million, fifty-five thousand, five hundred twenty".