280660002868 has 24 divisors (see below), whose sum is σ = 562012184384. Its totient is φ = 120134534400.

The previous prime is 280660002781. The next prime is 280660002901. The reversal of 280660002868 is 868200066082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6157053 + ... + 6202468.

Almost surely, 2^280660002868 is an apocalyptic number.

280660002868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

280660002868 is an abundant number, since it is smaller than the sum of its proper divisors (281352181516).

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

280660002868 is a wasteful number, since it uses less digits than its factorization.

280660002868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12360343 (or 12360341 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 280660002868 in words is "two hundred eighty billion, six hundred sixty million, two thousand, eight hundred sixty-eight".