284757775129 has 9 divisors (see below), whose sum is σ = 285985570143. Its totient is φ = 283535235672.

The previous prime is 284757775097. The next prime is 284757775201. The reversal of 284757775129 is 921577757482.

The square root of 284757775129 is 533627.

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

It can be written as a sum of positive squares in only one way, i.e., 282516699529 + 2241075600 = 531523^2 + 47340^2 .

It is not a de Polignac number, because 284757775129 - 2⁵ = 284757775097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284757775229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 140342887 + ... + 140344915.

Almost surely, 2^284757775129 is an apocalyptic number.

284757775129 is the 533627-th square number.

284757775129 is the 266814-th centered octagonal number.

It is an amenable number.

284757775129 is a deficient number, since it is larger than the sum of its proper divisors (1227795014).

284757775129 is an frugal number, since it uses more digits than its factorization.

284757775129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584 (or 2292 counting only the distinct ones).

The product of its digits is 69148800, while the sum is 64.

Multiplying 284757775129 by its sum of digits (64), we get a square (18224497608256 = 4269016²).

The spelling of 284757775129 in words is "two hundred eighty-four billion, seven hundred fifty-seven million, seven hundred seventy-five thousand, one hundred twenty-nine".