83117727643865 has 16 divisors (see below), whose sum is σ = 102095463191040. Its totient is φ = 64931167527360.

The previous prime is 83117727643813. The next prime is 83117727643949. The reversal of 83117727643865 is 56834672771138.

It is not a de Polignac number, because 83117727643865 - 2¹⁰ = 83117727642841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83117727643795 and 83117727643804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402735626 + ... + 402941955.

It is an arithmetic number, because the mean of its divisors is an integer number (6380966449440).

Almost surely, 2^{83117727643865} is an apocalyptic number.

It is an amenable number.

83117727643865 is a deficient number, since it is larger than the sum of its proper divisors (18977735547175).

83117727643865 is a wasteful number, since it uses less digits than its factorization.

83117727643865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805678072.

The product of its digits is 284497920, while the sum is 68.

The spelling of 83117727643865 in words is "eighty-three trillion, one hundred seventeen billion, seven hundred twenty-seven million, six hundred forty-three thousand, eight hundred sixty-five".