280448027538867 has 8 divisors (see below), whose sum is σ = 415478559316880. Its totient is φ = 186965351692560.

The previous prime is 280448027538829. The next prime is 280448027538961. The reversal of 280448027538867 is 768835720844082.

It is a happy number.

280448027538867 is a `hidden beast` number, since 2 + 8 + 0 + 4 + 4 + 8 + 0 + 2 + 7 + 538 + 86 + 7 = 666.

It is not a de Polignac number, because 280448027538867 - 2¹⁸ = 280448027276723 is a prime.

It is a super-2 number, since 2×280448027538867² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280448027538795 and 280448027538804.

It is not an unprimeable number, because it can be changed into a prime (280448027548867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5193481991434 + ... + 5193481991487.

It is an arithmetic number, because the mean of its divisors is an integer number (51934819914610).

Almost surely, 2^{280448027538867} is an apocalyptic number.

280448027538867 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

280448027538867 is a deficient number, since it is larger than the sum of its proper divisors (135030531778013).

280448027538867 is a wasteful number, since it uses less digits than its factorization.

280448027538867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10386963982930 (or 10386963982924 counting only the distinct ones).

The product of its (nonzero) digits is 1156055040, while the sum is 72.

The spelling of 280448027538867 in words is "two hundred eighty trillion, four hundred forty-eight billion, twenty-seven million, five hundred thirty-eight thousand, eight hundred sixty-seven".