82674772121 has 4 divisors (see below), whose sum is σ = 82689752244.
Its totient is φ = 82659792000.
The previous prime is 82674772111. The next prime is 82674772163. The reversal of 82674772121 is 12127747628.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 55996123225 + 26678648896 = 236635^2 + 163336^2
It is a cyclic number.
It is not a de Polignac number, because 82674772121 - 210 = 82674771097 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (82674772111) 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, 7481780 + ... + 7492821.
It is an arithmetic number, because the mean of its divisors is an integer number (20672438061).
Almost surely, 282674772121 is an apocalyptic number.
It is an amenable number.
82674772121 is a deficient number, since it is larger than the sum of its proper divisors (14980123).
82674772121 is a wasteful number, since it uses less digits than its factorization.
82674772121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14980122.
The product of its digits is 526848, while the sum is 47.
The spelling of 82674772121 in words is "eighty-two billion, six hundred seventy-four million, seven hundred seventy-two thousand, one hundred twenty-one".