82677721552168 has 16 divisors (see below), whose sum is σ = 160366270252500. Its totient is φ = 39913382818176.

The previous prime is 82677721552163. The next prime is 82677721552177. The reversal of 82677721552168 is 86125512777628.

It can be written as a sum of positive squares in 2 ways, for example, as 71148179063844 + 11529542488324 = 8434938^2 + 3395518^2 .

It is not an unprimeable number, because it can be changed into a prime (82677721552163) 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, 178184744493 + ... + 178184744956.

Almost surely, 2^{82677721552168} is an apocalyptic number.

It is an amenable number.

82677721552168 is a deficient number, since it is larger than the sum of its proper divisors (77688548700332).

82677721552168 is a wasteful number, since it uses less digits than its factorization.

82677721552168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356369489484 (or 356369489480 counting only the distinct ones).

The product of its digits is 158054400, while the sum is 67.

The spelling of 82677721552168 in words is "eighty-two trillion, six hundred seventy-seven billion, seven hundred twenty-one million, five hundred fifty-two thousand, one hundred sixty-eight".