280508008005 has 12 divisors (see below), whose sum is σ = 486213880620. Its totient is φ = 149604270912.

The previous prime is 280508007979. The next prime is 280508008013. The reversal of 280508008005 is 500800805082.

It can be written as a sum of positive squares in 2 ways, for example, as 111397072644 + 169110935361 = 333762^2 + 411231^2 .

It is not a de Polignac number, because 280508008005 - 2⁷ = 280508007877 is a prime.

It is a congruent number.

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, 3116755600 + ... + 3116755689.

It is an arithmetic number, because the mean of its divisors is an integer number (40517823385).

Almost surely, 2^280508008005 is an apocalyptic number.

It is an amenable number.

280508008005 is a deficient number, since it is larger than the sum of its proper divisors (205705872615).

280508008005 is a wasteful number, since it uses less digits than its factorization.

280508008005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6233511300 (or 6233511297 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The spelling of 280508008005 in words is "two hundred eighty billion, five hundred eight million, eight thousand, five".