83412042009991 has 2 divisors, whose sum is σ = 83412042009992. Its totient is φ = 83412042009990.

The previous prime is 83412042009913. The next prime is 83412042010019. The reversal of 83412042009991 is 19990024021438.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83412042009991 - 2²⁷ = 83411907792263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83412042019991) 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, 41706021004995 + 41706021004996.

It is an arithmetic number, because the mean of its divisors is an integer number (41706021004996).

Almost surely, 2^{83412042009991} is an apocalyptic number.

83412042009991 is a deficient number, since it is larger than the sum of its proper divisors (1).

83412042009991 is an equidigital number, since it uses as much as digits as its factorization.

83412042009991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 83412042009991 in words is "eighty-three trillion, four hundred twelve billion, forty-two million, nine thousand, nine hundred ninety-one".