280550005000 has 40 divisors (see below), whose sum is σ = 657328673430. Its totient is φ = 112220000000.

The previous prime is 280550004989. The next prime is 280550005019. The reversal of 280550005000 is 500055082.

It can be written as a sum of positive squares in 5 ways, for example, as 11444292484 + 269105712516 = 106978^2 + 518754^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (25).

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 9 ways as a sum of consecutive naturals, for example, 28050001 + ... + 28060000.

Almost surely, 2^280550005000 is an apocalyptic number.

280550005000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280550005000 is an abundant number, since it is smaller than the sum of its proper divisors (376778668430).

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

280550005000 is an equidigital number, since it uses as much as digits as its factorization.

280550005000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56110027 (or 56110008 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 280550005000 in words is "two hundred eighty billion, five hundred fifty million, five thousand".