278873280000 has 2000 divisors, whose sum is σ = 1252901818080. Its totient is φ = 60383232000.

The previous prime is 278873279981. The next prime is 278873280011. The reversal of 278873280000 is 82378872.

278873280000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (2000).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 199 ways as a sum of consecutive naturals, for example, 5261759974 + ... + 5261760026.

Almost surely, 2^278873280000 is an apocalyptic number.

278873280000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278873280000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626450909040).

278873280000 is an abundant number, since it is smaller than the sum of its proper divisors (974028538080).

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

278873280000 is an frugal number, since it uses more digits than its factorization.

278873280000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 278873280000 in words is "two hundred seventy-eight billion, eight hundred seventy-three million, two hundred eighty thousand".