280830276864 has 54 divisors (see below), whose sum is σ = 809702927306. Its totient is φ = 93610091520.

The previous prime is 280830276803. The next prime is 280830276877. The reversal of 280830276864 is 468672038082.

280830276864 is a `hidden beast` number, since 280 + 8 + 30 + 276 + 8 + 64 = 666.

It can be written as a sum of positive squares in only one way, i.e., 205578814464 + 75251462400 = 453408^2 + 274320^2 .

It is a super-3 number, since 3×280830276864³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 280830276864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60941767 + ... + 60946374.

Almost surely, 2^280830276864 is an apocalyptic number.

280830276864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

280830276864 is an abundant number, since it is smaller than the sum of its proper divisors (528872650442).

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

280830276864 is a wasteful number, since it uses less digits than its factorization.

280830276864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121888163 (or 121888146 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 280830276864 in words is "two hundred eighty billion, eight hundred thirty million, two hundred seventy-six thousand, eight hundred sixty-four".