21630110108 has 12 divisors (see below), whose sum is σ = 37862543880. Its totient is φ = 10812240432.

The previous prime is 21630110081. The next prime is 21630110119. The reversal of 21630110108 is 80101103612.

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, 686318 + ... + 717141.

It is an arithmetic number, because the mean of its divisors is an integer number (3155211990).

Almost surely, 2^21630110108 is an apocalyptic number.

It is an amenable number.

21630110108 is a deficient number, since it is larger than the sum of its proper divisors (16232433772).

21630110108 is a wasteful number, since it uses less digits than its factorization.

21630110108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407316 (or 1407314 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 21630110108 in words is "twenty-one billion, six hundred thirty million, one hundred ten thousand, one hundred eight".