84059696857 has 2 divisors, whose sum is σ = 84059696858. Its totient is φ = 84059696856.

The previous prime is 84059696737. The next prime is 84059696891. The reversal of 84059696857 is 75869695048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79894414336 + 4165282521 = 282656^2 + 64539^2 .

It is a cyclic number.

It is not a de Polignac number, because 84059696857 - 2²⁷ = 83925479129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84059696792 and 84059696801.

It is not a weakly prime, because it can be changed into another prime (84059696957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42029848428 + 42029848429.

It is an arithmetic number, because the mean of its divisors is an integer number (42029848429).

Almost surely, 2^84059696857 is an apocalyptic number.

It is an amenable number.

84059696857 is a deficient number, since it is larger than the sum of its proper divisors (1).

84059696857 is an equidigital number, since it uses as much as digits as its factorization.

84059696857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 130636800, while the sum is 67.

The spelling of 84059696857 in words is "eighty-four billion, fifty-nine million, six hundred ninety-six thousand, eight hundred fifty-seven".