280199489856 has 112 divisors (see below), whose sum is σ = 870969828288. Its totient is φ = 78377472000.

The previous prime is 280199489837. The next prime is 280199489863. The reversal of 280199489856 is 658984991082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5075245 + ... + 5130156.

It is an arithmetic number, because the mean of its divisors is an integer number (7776516324).

Almost surely, 2^280199489856 is an apocalyptic number.

280199489856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

280199489856 is an abundant number, since it is smaller than the sum of its proper divisors (590770338432).

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

280199489856 is a wasteful number, since it uses less digits than its factorization.

280199489856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10205440 (or 10205430 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 69.

The spelling of 280199489856 in words is "two hundred eighty billion, one hundred ninety-nine million, four hundred eighty-nine thousand, eight hundred fifty-six".