83535638221 has 8 divisors (see below), whose sum is σ = 98761345920. Its totient is φ = 69132941808.

The previous prime is 83535638189. The next prime is 83535638239. The reversal of 83535638221 is 12283653538.

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

It is not a de Polignac number, because 83535638221 - 2⁵ = 83535638189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83535638321) 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, 205752601 + ... + 205753006.

It is an arithmetic number, because the mean of its divisors is an integer number (12345168240).

Almost surely, 2^83535638221 is an apocalyptic number.

It is an amenable number.

83535638221 is a deficient number, since it is larger than the sum of its proper divisors (15225707699).

83535638221 is a wasteful number, since it uses less digits than its factorization.

83535638221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411505643.

The product of its digits is 1036800, while the sum is 46.

The spelling of 83535638221 in words is "eighty-three billion, five hundred thirty-five million, six hundred thirty-eight thousand, two hundred twenty-one".