280506680464 has 20 divisors (see below), whose sum is σ = 543499352704. Its totient is φ = 140248783008.

The previous prime is 280506680459. The next prime is 280506680471. The reversal of 280506680464 is 464086605082.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253849 + ... + 790855.

Almost surely, 2^280506680464 is an apocalyptic number.

It is an amenable number.

280506680464 is a deficient number, since it is larger than the sum of its proper divisors (262992672240).

280506680464 is a wasteful number, since it uses less digits than its factorization.

280506680464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569662 (or 569656 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 280506680464 in words is "two hundred eighty billion, five hundred six million, six hundred eighty thousand, four hundred sixty-four".