84869544596849 has 16 divisors (see below), whose sum is σ = 91613859494400. Its totient is φ = 78379791690816.

The previous prime is 84869544596833. The next prime is 84869544596917. The reversal of 84869544596849 is 94869544596848.

It is a cyclic number.

It is not a de Polignac number, because 84869544596849 - 2⁴ = 84869544596833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84869544596549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157237967 + ... + 157776795.

It is an arithmetic number, because the mean of its divisors is an integer number (5725866218400).

Almost surely, 2^{84869544596849} is an apocalyptic number.

It is an amenable number.

84869544596849 is a deficient number, since it is larger than the sum of its proper divisors (6744314897551).

84869544596849 is a wasteful number, since it uses less digits than its factorization.

84869544596849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775024.

The product of its digits is 85996339200, while the sum is 89.

Subtracting 84869544596849 from its reverse (94869544596848), we obtain a palindrome (9999999999999).

The spelling of 84869544596849 in words is "eighty-four trillion, eight hundred sixty-nine billion, five hundred forty-four million, five hundred ninety-six thousand, eight hundred forty-nine".