21360466208 has 24 divisors (see below), whose sum is σ = 42090936048. Its totient is φ = 10670704704.

The previous prime is 21360466177. The next prime is 21360466223. The reversal of 21360466208 is 80266406312.

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, 261266 + ... + 333137.

It is an arithmetic number, because the mean of its divisors is an integer number (1753789002).

Almost surely, 2^21360466208 is an apocalyptic number.

It is an amenable number.

21360466208 is a deficient number, since it is larger than the sum of its proper divisors (20730469840).

21360466208 is a wasteful number, since it uses less digits than its factorization.

21360466208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595536 (or 595528 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 21360466208 in words is "twenty-one billion, three hundred sixty million, four hundred sixty-six thousand, two hundred eight".