83828199991 has 4 divisors (see below), whose sum is σ = 85249017000. Its totient is φ = 82407382984.

The previous prime is 83828199953. The next prime is 83828200031. The reversal of 83828199991 is 19999182838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19999182838 = 2 ⋅9999591419.

It is a cyclic number.

It is not a de Polignac number, because 83828199991 - 2⁷ = 83828199863 is a prime.

It is a super-2 number, since 2×83828199991² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83828199491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 710408416 + ... + 710408533.

It is an arithmetic number, because the mean of its divisors is an integer number (21312254250).

Almost surely, 2^83828199991 is an apocalyptic number.

83828199991 is a deficient number, since it is larger than the sum of its proper divisors (1420817009).

83828199991 is a wasteful number, since it uses less digits than its factorization.

83828199991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420817008.

The product of its digits is 20155392, while the sum is 67.

The spelling of 83828199991 in words is "eighty-three billion, eight hundred twenty-eight million, one hundred ninety-nine thousand, nine hundred ninety-one".