82681889686858 has 16 divisors (see below), whose sum is σ = 154625871622464. Its totient is φ = 32213723254560.

The previous prime is 82681889686853. The next prime is 82681889686867. The reversal of 82681889686858 is 85868698818628.

It is a super-3 number, since 3×82681889686858³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (82681889686853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268447693635 + ... + 268447693942.

It is an arithmetic number, because the mean of its divisors is an integer number (9664116976404).

Almost surely, 2^{82681889686858} is an apocalyptic number.

82681889686858 is a deficient number, since it is larger than the sum of its proper divisors (71943981935606).

82681889686858 is a wasteful number, since it uses less digits than its factorization.

82681889686858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536895387597.

The product of its digits is 40768634880, while the sum is 91.

The spelling of 82681889686858 in words is "eighty-two trillion, six hundred eighty-one billion, eight hundred eighty-nine million, six hundred eighty-six thousand, eight hundred fifty-eight".