278048453808 has 80 divisors (see below), whose sum is σ = 728135110656. Its totient is φ = 91421164800.

The previous prime is 278048453779. The next prime is 278048453827. The reversal of 278048453808 is 808354840872.

It is a Cunningham number, because it is equal to 527303²-1.

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 15 ways as a sum of consecutive naturals, for example, 922783 + ... + 1186433.

Almost surely, 2^278048453808 is an apocalyptic number.

It is an amenable number.

278048453808 is an abundant number, since it is smaller than the sum of its proper divisors (450086656848).

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

278048453808 is a wasteful number, since it uses less digits than its factorization.

278048453808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263962 (or 263956 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 57.

The spelling of 278048453808 in words is "two hundred seventy-eight billion, forty-eight million, four hundred fifty-three thousand, eight hundred eight".