84869544596917 has 2 divisors, whose sum is σ = 84869544596918. Its totient is φ = 84869544596916.

The previous prime is 84869544596833. The next prime is 84869544596923. The reversal of 84869544596917 is 71969544596848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82356514352401 + 2513030244516 = 9075049^2 + 1585254^2 .

It is a cyclic number.

It is not a de Polignac number, because 84869544596917 - 2²⁷ = 84869410379189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84869544591917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42434772298458 + 42434772298459.

It is an arithmetic number, because the mean of its divisors is an integer number (42434772298459).

Almost surely, 2^{84869544596917} is an apocalyptic number.

It is an amenable number.

84869544596917 is a deficient number, since it is larger than the sum of its proper divisors (1).

84869544596917 is an equidigital number, since it uses as much as digits as its factorization.

84869544596917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18811699200, while the sum is 85.

The spelling of 84869544596917 in words is "eighty-four trillion, eight hundred sixty-nine billion, five hundred forty-four million, five hundred ninety-six thousand, nine hundred seventeen".