83828199857 has 2 divisors, whose sum is σ = 83828199858. Its totient is φ = 83828199856.

The previous prime is 83828199853. The next prime is 83828199859. The reversal of 83828199857 is 75899182838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83821251361 + 6948496 = 289519^2 + 2636^2 .

It is a cyclic number.

It is not a de Polignac number, because 83828199857 - 2² = 83828199853 is a prime.

Together with 83828199859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83828199853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41914099928 + 41914099929.

It is an arithmetic number, because the mean of its divisors is an integer number (41914099929).

Almost surely, 2^83828199857 is an apocalyptic number.

It is an amenable number.

83828199857 is a deficient number, since it is larger than the sum of its proper divisors (1).

83828199857 is an equidigital number, since it uses as much as digits as its factorization.

83828199857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69672960, while the sum is 68.

The spelling of 83828199857 in words is "eighty-three billion, eight hundred twenty-eight million, one hundred ninety-nine thousand, eight hundred fifty-seven".