21836663822 has 8 divisors (see below), whose sum is σ = 32951133936. Its totient is φ = 10852952512.

The previous prime is 21836663801. The next prime is 21836663831. The reversal of 21836663822 is 22836663812.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32689283 + ... + 32689950.

It is an arithmetic number, because the mean of its divisors is an integer number (4118891742).

Almost surely, 2^21836663822 is an apocalyptic number.

21836663822 is a deficient number, since it is larger than the sum of its proper divisors (11114470114).

21836663822 is a wasteful number, since it uses less digits than its factorization.

21836663822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65379402.

The product of its digits is 995328, while the sum is 47.

The spelling of 21836663822 in words is "twenty-one billion, eight hundred thirty-six million, six hundred sixty-three thousand, eight hundred twenty-two".