84135259289 has 4 divisors (see below), whose sum is σ = 84148356624. Its totient is φ = 84122161956.

The previous prime is 84135259277. The next prime is 84135259301. The reversal of 84135259289 is 98295253148.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (84135259277) and next prime (84135259301).

It is a cyclic number.

It is not a de Polignac number, because 84135259289 - 2²⁴ = 84118482073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84135229289) 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 in 3 ways as a sum of consecutive naturals, for example, 6539027 + ... + 6551880.

It is an arithmetic number, because the mean of its divisors is an integer number (21037089156).

Almost surely, 2^84135259289 is an apocalyptic number.

It is an amenable number.

84135259289 is a deficient number, since it is larger than the sum of its proper divisors (13097335).

84135259289 is a wasteful number, since it uses less digits than its factorization.

84135259289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13097334.

The product of its digits is 6220800, while the sum is 56.

The spelling of 84135259289 in words is "eighty-four billion, one hundred thirty-five million, two hundred fifty-nine thousand, two hundred eighty-nine".