982756978281 has 135 divisors (see below), whose sum is σ = 1640975591871. Its totient is φ = 585858738816.

The previous prime is 982756978237. The next prime is 982756978319. The reversal of 982756978281 is 182879657289.

The square root of 982756978281 is 991341.

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

982756978281 is a `hidden beast` number, since 9 + 8 + 275 + 6 + 9 + 78 + 281 = 666.

982756978281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 13 ways, for example, as 39022446681 + 943734531600 = 197541^2 + 971460^2 .

It is not a de Polignac number, because 982756978281 - 2¹³ = 982756970089 is a prime.

It is a super-2 number, since 2×982756978281² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (982756978201) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 4291515075 + ... + 4291515303.

Almost surely, 2^982756978281 is an apocalyptic number.

982756978281 is the 991341-st square number.

982756978281 is the 495671-st centered octagonal number.

It is an amenable number.

982756978281 is a deficient number, since it is larger than the sum of its proper divisors (658218613590).

982756978281 is an equidigital number, since it uses as much as digits as its factorization.

982756978281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570 (or 282 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 72.

The spelling of 982756978281 in words is "nine hundred eighty-two billion, seven hundred fifty-six million, nine hundred seventy-eight thousand, two hundred eighty-one".