83409978107 has 2 divisors, whose sum is σ = 83409978108. Its totient is φ = 83409978106.

The previous prime is 83409978097. The next prime is 83409978163. The reversal of 83409978107 is 70187990438.

It is an a-pointer prime, because the next prime (83409978163) can be obtained adding 83409978107 to its sum of digits (56).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83409978107 - 2²² = 83405783803 is a prime.

It is not a weakly prime, because it can be changed into another prime (83409978307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41704989053 + 41704989054.

It is an arithmetic number, because the mean of its divisors is an integer number (41704989054).

Almost surely, 2^83409978107 is an apocalyptic number.

83409978107 is a deficient number, since it is larger than the sum of its proper divisors (1).

83409978107 is an equidigital number, since it uses as much as digits as its factorization.

83409978107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 83409978107 in words is "eighty-three billion, four hundred nine million, nine hundred seventy-eight thousand, one hundred seven".