280012798861 has 8 divisors (see below), whose sum is σ = 289077984000. Its totient is φ = 270949645920.

The previous prime is 280012798843. The next prime is 280012798873. The reversal of 280012798861 is 168897210082.

It is a happy number.

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 280012798861 - 2⁵ = 280012798829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280012798799 and 280012798808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280012798831) 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, 225511 + ... + 781588.

It is an arithmetic number, because the mean of its divisors is an integer number (36134748000).

Almost surely, 2^280012798861 is an apocalyptic number.

It is an amenable number.

280012798861 is a deficient number, since it is larger than the sum of its proper divisors (9065185139).

280012798861 is a wasteful number, since it uses less digits than its factorization.

280012798861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016099.

The product of its (nonzero) digits is 774144, while the sum is 52.

The spelling of 280012798861 in words is "two hundred eighty billion, twelve million, seven hundred ninety-eight thousand, eight hundred sixty-one".