83379575809 has 2 divisors, whose sum is σ = 83379575810. Its totient is φ = 83379575808.

The previous prime is 83379575767. The next prime is 83379575869. The reversal of 83379575809 is 90857597338.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53391034225 + 29988541584 = 231065^2 + 173172^2 .

It is a cyclic number.

It is not a de Polignac number, because 83379575809 - 2¹⁷ = 83379444737 is a prime.

It is not a weakly prime, because it can be changed into another prime (83379575869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41689787904 + 41689787905.

It is an arithmetic number, because the mean of its divisors is an integer number (41689787905).

Almost surely, 2^83379575809 is an apocalyptic number.

It is an amenable number.

83379575809 is a deficient number, since it is larger than the sum of its proper divisors (1).

83379575809 is an equidigital number, since it uses as much as digits as its factorization.

83379575809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57153600, while the sum is 64.

The spelling of 83379575809 in words is "eighty-three billion, three hundred seventy-nine million, five hundred seventy-five thousand, eight hundred nine".