84246836387837 has 2 divisors, whose sum is σ = 84246836387838. Its totient is φ = 84246836387836.

The previous prime is 84246836387737. The next prime is 84246836387839. The reversal of 84246836387837 is 73878363864248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52345644630841 + 31901191756996 = 7235029^2 + 5648114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84246836387837 is a prime.

Together with 84246836387839, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84246836387839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42123418193918 + 42123418193919.

It is an arithmetic number, because the mean of its divisors is an integer number (42123418193919).

Almost surely, 2^{84246836387837} is an apocalyptic number.

It is an amenable number.

84246836387837 is a deficient number, since it is larger than the sum of its proper divisors (1).

84246836387837 is an equidigital number, since it uses as much as digits as its factorization.

84246836387837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6242697216, while the sum is 77.

The spelling of 84246836387837 in words is "eighty-four trillion, two hundred forty-six billion, eight hundred thirty-six million, three hundred eighty-seven thousand, eight hundred thirty-seven".