21068833254206 has 4 divisors (see below), whose sum is σ = 31603249881312. Its totient is φ = 10534416627102.

The previous prime is 21068833254197. The next prime is 21068833254253. The reversal of 21068833254206 is 60245233886012.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5267208313550 + ... + 5267208313553.

It is an arithmetic number, because the mean of its divisors is an integer number (7900812470328).

Almost surely, 2^{21068833254206} is an apocalyptic number.

21068833254206 is a deficient number, since it is larger than the sum of its proper divisors (10534416627106).

21068833254206 is a wasteful number, since it uses less digits than its factorization.

21068833254206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10534416627105.

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 21068833254206 in words is "twenty-one trillion, sixty-eight billion, eight hundred thirty-three million, two hundred fifty-four thousand, two hundred six".