689422129559 has 4 divisors (see below), whose sum is σ = 689449887720. Its totient is φ = 689394371400.

The previous prime is 689422129507. The next prime is 689422129601. The reversal of 689422129559 is 955921224986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 689422129559 - 2²⁰ = 689421080983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689422129159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13841792 + ... + 13891509.

It is an arithmetic number, because the mean of its divisors is an integer number (172362471930).

Almost surely, 2^689422129559 is an apocalyptic number.

689422129559 is a deficient number, since it is larger than the sum of its proper divisors (27758161).

689422129559 is a wasteful number, since it uses less digits than its factorization.

689422129559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27758160.

The product of its digits is 27993600, while the sum is 62.

The spelling of 689422129559 in words is "six hundred eighty-nine billion, four hundred twenty-two million, one hundred twenty-nine thousand, five hundred fifty-nine".