82667712568861 has 8 divisors (see below), whose sum is σ = 94492626588800. Its totient is φ = 70846608747888.

The previous prime is 82667712568829. The next prime is 82667712568871. The reversal of 82667712568861 is 16886521776628.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82667712568861 - 2⁵ = 82667712568829 is a prime.

It is a super-4 number, since 4×82667712568861⁴ (a number of 57 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82667712568871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952503246 + ... + 952590031.

It is an arithmetic number, because the mean of its divisors is an integer number (11811578323600).

Almost surely, 2^{82667712568861} is an apocalyptic number.

It is an amenable number.

82667712568861 is a deficient number, since it is larger than the sum of its proper divisors (11824914019939).

82667712568861 is a wasteful number, since it uses less digits than its factorization.

82667712568861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905099483.

The product of its digits is 650280960, while the sum is 73.

The spelling of 82667712568861 in words is "eighty-two trillion, six hundred sixty-seven billion, seven hundred twelve million, five hundred sixty-eight thousand, eight hundred sixty-one".