21416335630 has 24 divisors (see below), whose sum is σ = 39100092696. Its totient is φ = 8445858960.

The previous prime is 21416335613. The next prime is 21416335637. The reversal of 21416335630 is 3653361412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21416335637) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 162012 + ... + 262831.

It is an arithmetic number, because the mean of its divisors is an integer number (1629170529).

Almost surely, 2^21416335630 is an apocalyptic number.

21416335630 is a deficient number, since it is larger than the sum of its proper divisors (17683757066).

21416335630 is an equidigital number, since it uses as much as digits as its factorization.

21416335630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424992 (or 424921 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 21416335630 in words is "twenty-one billion, four hundred sixteen million, three hundred thirty-five thousand, six hundred thirty".