21243077306 has 8 divisors (see below), whose sum is σ = 34761399264. Its totient is φ = 9655944220.

The previous prime is 21243077299. The next prime is 21243077341. The reversal of 21243077306 is 60377034212.

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, 482797190 + ... + 482797233.

It is an arithmetic number, because the mean of its divisors is an integer number (4345174908).

Almost surely, 2^21243077306 is an apocalyptic number.

21243077306 is a deficient number, since it is larger than the sum of its proper divisors (13518321958).

21243077306 is a wasteful number, since it uses less digits than its factorization.

21243077306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965594436.

The product of its (nonzero) digits is 42336, while the sum is 35.

The spelling of 21243077306 in words is "twenty-one billion, two hundred forty-three million, seventy-seven thousand, three hundred six".