858200284881 has 27 divisors (see below), whose sum is σ = 1251541427409. Its totient is φ = 566684491392.

The previous prime is 858200284873. The next prime is 858200284901. The reversal of 858200284881 is 188482002858.

The square root of 858200284881 is 926391.

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

858200284881 is a `hidden beast` number, since 85 + 8 + 200 + 284 + 8 + 81 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7592508225 + 850607776656 = 87135^2 + 922284^2 .

It is not a de Polignac number, because 858200284881 - 2³ = 858200284873 is a prime.

It is a super-2 number, since 2×858200284881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (858200284811) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 302928441 + ... + 302931273.

Almost surely, 2^858200284881 is an apocalyptic number.

858200284881 is the 926391-st square number.

858200284881 is the 463196-th centered octagonal number.

It is an amenable number.

858200284881 is a deficient number, since it is larger than the sum of its proper divisors (393341142528).

858200284881 is an frugal number, since it uses more digits than its factorization.

858200284881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890 (or 2945 counting only the distinct ones).

The product of its (nonzero) digits is 2621440, while the sum is 54.

The spelling of 858200284881 in words is "eight hundred fifty-eight billion, two hundred million, two hundred eighty-four thousand, eight hundred eighty-one".