982771095661 has 4 divisors (see below), whose sum is σ = 982773312892. Its totient is φ = 982768878432.

The previous prime is 982771095653. The next prime is 982771095707. The reversal of 982771095661 is 166590177289.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166590177289 = 12433 ⋅13399033.

It can be written as a sum of positive squares in 2 ways, for example, as 22821842761 + 959949252900 = 151069^2 + 979770^2 .

It is a cyclic number.

It is not a de Polignac number, because 982771095661 - 2³ = 982771095653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 982771095661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (982771095161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190056 + ... + 1414801.

It is an arithmetic number, because the mean of its divisors is an integer number (245693328223).

Almost surely, 2^982771095661 is an apocalyptic number.

It is an amenable number.

982771095661 is a deficient number, since it is larger than the sum of its proper divisors (2217231).

982771095661 is a wasteful number, since it uses less digits than its factorization.

982771095661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217230.

The product of its (nonzero) digits is 11430720, while the sum is 61.

The spelling of 982771095661 in words is "nine hundred eighty-two billion, seven hundred seventy-one million, ninety-five thousand, six hundred sixty-one".