280000000001 has 8 divisors (see below), whose sum is σ = 286524954144. Its totient is φ = 273475651680.

The previous prime is 279999999997. The next prime is 280000000031. The reversal of 280000000001 is 100000000082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 280000000001 - 2² = 279999999997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 280000000001.

It is not an unprimeable number, because it can be changed into a prime (280000000031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 861725 + ... + 1141301.

It is an arithmetic number, because the mean of its divisors is an integer number (35815619268).

Almost surely, 2^280000000001 is an apocalyptic number.

It is an amenable number.

280000000001 is a deficient number, since it is larger than the sum of its proper divisors (6524954143).

280000000001 is a wasteful number, since it uses less digits than its factorization.

280000000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302911.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 280000000001 its reverse (100000000082), we get a palindrome (380000000083).

The spelling of 280000000001 in words is "two hundred eighty billion, one", and thus it is an aban number.