26921890106 has 8 divisors (see below), whose sum is σ = 41367782484. Its totient is φ = 13132629280.

The previous prime is 26921890097. The next prime is 26921890111. The reversal of 26921890106 is 60109812962.

It can be written as a sum of positive squares in 2 ways, for example, as 18444084481 + 8477805625 = 135809^2 + 92075^2 .

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164157785 + ... + 164157948.

Almost surely, 2^26921890106 is an apocalyptic number.

26921890106 is a deficient number, since it is larger than the sum of its proper divisors (14445892378).

26921890106 is a wasteful number, since it uses less digits than its factorization.

26921890106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328315776.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 26921890106 in words is "twenty-six billion, nine hundred twenty-one million, eight hundred ninety thousand, one hundred six".