8565436613993 has 12 divisors (see below), whose sum is σ = 10285290577152. Its totient is φ = 7104970461960.

The previous prime is 8565436613977. The next prime is 8565436613999. The reversal of 8565436613993 is 3993166345658.

It is not a de Polignac number, because 8565436613993 - 2⁴ = 8565436613977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8565436613999) 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 11 ways as a sum of consecutive naturals, for example, 2819431205 + ... + 2819434242.

It is an arithmetic number, because the mean of its divisors is an integer number (857107548096).

Almost surely, 2^{8565436613993} is an apocalyptic number.

It is an amenable number.

8565436613993 is a deficient number, since it is larger than the sum of its proper divisors (1719853963159).

8565436613993 is a wasteful number, since it uses less digits than its factorization.

8565436613993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638865492 (or 5638865485 counting only the distinct ones).

The product of its digits is 377913600, while the sum is 68.

The spelling of 8565436613993 in words is "eight trillion, five hundred sixty-five billion, four hundred thirty-six million, six hundred thirteen thousand, nine hundred ninety-three".