83656816193 has 8 divisors (see below), whose sum is σ = 83781879720. Its totient is φ = 83531796480.

The previous prime is 83656816169. The next prime is 83656816211. The reversal of 83656816193 is 39161865638.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14668116544 + 68988699649 = 121112^2 + 262657^2 .

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 83656816193 - 2²² = 83652621889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83656816153) 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, 6807971 + ... + 6820247.

It is an arithmetic number, because the mean of its divisors is an integer number (10472734965).

Almost surely, 2^83656816193 is an apocalyptic number.

It is an amenable number.

83656816193 is a deficient number, since it is larger than the sum of its proper divisors (125063527).

83656816193 is a wasteful number, since it uses less digits than its factorization.

83656816193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21907.

The product of its digits is 5598720, while the sum is 56.

The spelling of 83656816193 in words is "eighty-three billion, six hundred fifty-six million, eight hundred sixteen thousand, one hundred ninety-three".