42659975689 has 4 divisors (see below), whose sum is σ = 42663717124. Its totient is φ = 42656234256.

The previous prime is 42659975681. The next prime is 42659975693. The reversal of 42659975689 is 98657995624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21516489225 + 21143486464 = 146685^2 + 145408^2 .

It is a cyclic number.

It is not a de Polignac number, because 42659975689 - 2³ = 42659975681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42659975681) 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, 1853562 + ... + 1876435.

It is an arithmetic number, because the mean of its divisors is an integer number (10665929281).

Almost surely, 2^42659975689 is an apocalyptic number.

It is an amenable number.

42659975689 is a deficient number, since it is larger than the sum of its proper divisors (3741435).

42659975689 is a wasteful number, since it uses less digits than its factorization.

42659975689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741434.

The product of its digits is 293932800, while the sum is 70.

The spelling of 42659975689 in words is "forty-two billion, six hundred fifty-nine million, nine hundred seventy-five thousand, six hundred eighty-nine".