83828199971 has 4 divisors (see below), whose sum is σ = 83887696200. Its totient is φ = 83768703744.

The previous prime is 83828199953. The next prime is 83828200031. The reversal of 83828199971 is 17999182838.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83828199971 is a prime.

It is a super-2 number, since 2×83828199971² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83828199898 and 83828199907.

It is not an unprimeable number, because it can be changed into a prime (83828399971) 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, 29746001 + ... + 29748818.

It is an arithmetic number, because the mean of its divisors is an integer number (20971924050).

Almost surely, 2^83828199971 is an apocalyptic number.

83828199971 is a deficient number, since it is larger than the sum of its proper divisors (59496229).

83828199971 is a wasteful number, since it uses less digits than its factorization.

83828199971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59496228.

The product of its digits is 15676416, while the sum is 65.

The spelling of 83828199971 in words is "eighty-three billion, eight hundred twenty-eight million, one hundred ninety-nine thousand, nine hundred seventy-one".