84336597817 has 2 divisors, whose sum is σ = 84336597818. Its totient is φ = 84336597816.

The previous prime is 84336597811. The next prime is 84336597827. The reversal of 84336597817 is 71879563348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44396175616 + 39940422201 = 210704^2 + 199851^2 .

It is a cyclic number.

It is not a de Polignac number, because 84336597817 - 2¹¹ = 84336595769 is a prime.

It is a super-2 number, since 2×84336597817² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84336597811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42168298908 + 42168298909.

It is an arithmetic number, because the mean of its divisors is an integer number (42168298909).

Almost surely, 2^84336597817 is an apocalyptic number.

It is an amenable number.

84336597817 is a deficient number, since it is larger than the sum of its proper divisors (1).

84336597817 is an equidigital number, since it uses as much as digits as its factorization.

84336597817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 61.

The spelling of 84336597817 in words is "eighty-four billion, three hundred thirty-six million, five hundred ninety-seven thousand, eight hundred seventeen".