21875035706 has 8 divisors (see below), whose sum is σ = 32814132564. Its totient is φ = 10936991520.

The previous prime is 21875035691. The next prime is 21875035747. The reversal of 21875035706 is 60753057812.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17014854481 + 4860181225 = 130441^2 + 69715^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 208985 + ... + 295676.

Almost surely, 2^21875035706 is an apocalyptic number.

21875035706 is a deficient number, since it is larger than the sum of its proper divisors (10939096858).

21875035706 is a wasteful number, since it uses less digits than its factorization.

21875035706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526336.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 21875035706 in words is "twenty-one billion, eight hundred seventy-five million, thirty-five thousand, seven hundred six".