280563605501089 has 9 divisors (see below), whose sum is σ = 282197649384889. Its totient is φ = 278938969550320.

The previous prime is 280563605501057. The next prime is 280563605501111. The reversal of 280563605501089 is 980105506365082.

The square root of 280563605501089 is 16750033.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 243953941950625 + 36609663550464 = 15619025^2 + 6050592^2 .

It is not a de Polignac number, because 280563605501089 - 2⁵ = 280563605501057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280563605501029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2897707299 + ... + 2897804119.

Almost surely, 2^{280563605501089} is an apocalyptic number.

280563605501089 is the 16750033-rd square number.

280563605501089 is the 8375017-th centered octagonal number.

It is an amenable number.

280563605501089 is a deficient number, since it is larger than the sum of its proper divisors (1634043883800).

280563605501089 is an frugal number, since it uses more digits than its factorization.

280563605501089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193988 (or 96994 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 58.

The spelling of 280563605501089 in words is "two hundred eighty trillion, five hundred sixty-three billion, six hundred five million, five hundred one thousand, eighty-nine".