84110865679 has 2 divisors, whose sum is σ = 84110865680. Its totient is φ = 84110865678.

The previous prime is 84110865667. The next prime is 84110865697. The reversal of 84110865679 is 97656801148.

Together with next prime (84110865697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84110865679 - 2²⁹ = 83573994767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84110865479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42055432839 + 42055432840.

It is an arithmetic number, because the mean of its divisors is an integer number (42055432840).

Almost surely, 2^84110865679 is an apocalyptic number.

84110865679 is a deficient number, since it is larger than the sum of its proper divisors (1).

84110865679 is an equidigital number, since it uses as much as digits as its factorization.

84110865679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 84110865679 in words is "eighty-four billion, one hundred ten million, eight hundred sixty-five thousand, six hundred seventy-nine".