280450480655360 has 528 divisors, whose sum is σ = 736624359486720. Its totient is φ = 102161461248000.

The previous prime is 280450480655353. The next prime is 280450480655419. The reversal of 280450480655360 is 63556084054082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 280450480655296 and 280450480655305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14116388147 + ... + 14116408013.

Almost surely, 2^{280450480655360} is an apocalyptic number.

280450480655360 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 280450480655360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368312179743360).

280450480655360 is an abundant number, since it is smaller than the sum of its proper divisors (456173878831360).

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

280450480655360 is a wasteful number, since it uses less digits than its factorization.

280450480655360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20124 (or 20075 counting only the distinct ones).

The product of its (nonzero) digits is 27648000, while the sum is 56.

The spelling of 280450480655360 in words is "two hundred eighty trillion, four hundred fifty billion, four hundred eighty million, six hundred fifty-five thousand, three hundred sixty".