21010604630 has 8 divisors (see below), whose sum is σ = 37819088352. Its totient is φ = 8404241848.

The previous prime is 21010604591. The next prime is 21010604663. The reversal of 21010604630 is 3640601012.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 21010604596 and 21010604605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050530222 + ... + 1050530241.

It is an arithmetic number, because the mean of its divisors is an integer number (4727386044).

Almost surely, 2^21010604630 is an apocalyptic number.

21010604630 is a deficient number, since it is larger than the sum of its proper divisors (16808483722).

21010604630 is a wasteful number, since it uses less digits than its factorization.

21010604630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101060470.

The product of its (nonzero) digits is 864, while the sum is 23.

The spelling of 21010604630 in words is "twenty-one billion, ten million, six hundred four thousand, six hundred thirty".