83641952221 has 8 divisors (see below), whose sum is σ = 89317324800. Its totient is φ = 78152657520.

The previous prime is 83641952189. The next prime is 83641952239. The reversal of 83641952221 is 12225914638.

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 83641952221 - 2⁵ = 83641952189 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 (83641952321) 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, 46518541 + ... + 46520338.

It is an arithmetic number, because the mean of its divisors is an integer number (11164665600).

Almost surely, 2^83641952221 is an apocalyptic number.

It is an amenable number.

83641952221 is a deficient number, since it is larger than the sum of its proper divisors (5675372579).

83641952221 is a wasteful number, since it uses less digits than its factorization.

83641952221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93038939.

The product of its digits is 207360, while the sum is 43.

The spelling of 83641952221 in words is "eighty-three billion, six hundred forty-one million, nine hundred fifty-two thousand, two hundred twenty-one".