278608085252 has 12 divisors (see below), whose sum is σ = 557216170560. Its totient is φ = 119403465096.

The previous prime is 278608085243. The next prime is 278608085257. The reversal of 278608085252 is 252580806872.

278608085252 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 278608085194 and 278608085203.

It is not an unprimeable number, because it can be changed into a prime (278608085257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4975144352 + ... + 4975144407.

It is an arithmetic number, because the mean of its divisors is an integer number (46434680880).

Almost surely, 2^278608085252 is an apocalyptic number.

It is an amenable number.

278608085252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

278608085252 is a wasteful number, since it uses less digits than its factorization.

278608085252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9950288770 (or 9950288768 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 53.

The spelling of 278608085252 in words is "two hundred seventy-eight billion, six hundred eight million, eighty-five thousand, two hundred fifty-two".