83168878193 has 4 divisors (see below), whose sum is σ = 83175763188. Its totient is φ = 83161993200.

The previous prime is 83168878187. The next prime is 83168878207. The reversal of 83168878193 is 39187886138.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70207511089 + 12961367104 = 264967^2 + 113848^2 .

It is a cyclic number.

It is not a de Polignac number, because 83168878193 - 2¹⁸ = 83168616049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83168878103) 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, 3424346 + ... + 3448547.

It is an arithmetic number, because the mean of its divisors is an integer number (20793940797).

Almost surely, 2^83168878193 is an apocalyptic number.

It is an amenable number.

83168878193 is a deficient number, since it is larger than the sum of its proper divisors (6884995).

83168878193 is a wasteful number, since it uses less digits than its factorization.

83168878193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884994.

The product of its digits is 13934592, while the sum is 62.

The spelling of 83168878193 in words is "eighty-three billion, one hundred sixty-eight million, eight hundred seventy-eight thousand, one hundred ninety-three".