83379221668 has 24 divisors (see below), whose sum is σ = 146642350400. Its totient is φ = 41481508320.

The previous prime is 83379221663. The next prime is 83379221677. The reversal of 83379221668 is 86612297338.

It is a super-2 number, since 2×83379221668² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83379221663) 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, 4128058 + ... + 4148206.

Almost surely, 2^83379221668 is an apocalyptic number.

It is an amenable number.

83379221668 is a deficient number, since it is larger than the sum of its proper divisors (63263128732).

83379221668 is a wasteful number, since it uses less digits than its factorization.

83379221668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25267 (or 25265 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 55.

The spelling of 83379221668 in words is "eighty-three billion, three hundred seventy-nine million, two hundred twenty-one thousand, six hundred sixty-eight".