280065606400 has 108 divisors (see below), whose sum is σ = 715568131264. Its totient is φ = 108412416000.

The previous prime is 280065606341. The next prime is 280065606413. The reversal of 280065606400 is 4606560082.

It is a self number, because there is not a number n which added to its sum of digits gives 280065606400.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 507411 + ... + 904210.

Almost surely, 2^280065606400 is an apocalyptic number.

280065606400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280065606400 is an abundant number, since it is smaller than the sum of its proper divisors (435502524864).

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

280065606400 is a wasteful number, since it uses less digits than its factorization.

280065606400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411678 (or 1411659 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 280065606400 in words is "two hundred eighty billion, sixty-five million, six hundred six thousand, four hundred".