280055263680 has 336 divisors, whose sum is σ = 1073620997280. Its totient is φ = 66588770304.

The previous prime is 280055263651. The next prime is 280055263721. The reversal of 280055263680 is 86362550082.

280055263680 is a `hidden beast` number, since 2 + 8 + 0 + 0 + 5 + 5 + 2 + 636 + 8 + 0 = 666.

280055263680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 779712 + ... + 1080768.

Almost surely, 2^280055263680 is an apocalyptic number.

280055263680 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 280055263680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536810498640).

280055263680 is an abundant number, since it is smaller than the sum of its proper divisors (793565733600).

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

280055263680 is a wasteful number, since it uses less digits than its factorization.

280055263680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301116 (or 301103 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 280055263680 in words is "two hundred eighty billion, fifty-five million, two hundred sixty-three thousand, six hundred eighty".