278808860047 has 8 divisors (see below), whose sum is σ = 281475241200. Its totient is φ = 276153081600.

The previous prime is 278808859999. The next prime is 278808860087. The reversal of 278808860047 is 740068808872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 278808860047 - 2⁷ = 278808859919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 278808859973 and 278808860000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278808860087) by changing a digit.

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, 2597829 + ... + 2703022.

It is an arithmetic number, because the mean of its divisors is an integer number (35184405150).

Almost surely, 2^278808860047 is an apocalyptic number.

278808860047 is a deficient number, since it is larger than the sum of its proper divisors (2666381153).

278808860047 is a wasteful number, since it uses less digits than its factorization.

278808860047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5301353.

The product of its (nonzero) digits is 9633792, while the sum is 58.

The spelling of 278808860047 in words is "two hundred seventy-eight billion, eight hundred eight million, eight hundred sixty thousand, forty-seven".