21650630126 has 8 divisors (see below), whose sum is σ = 34386294960. Its totient is φ = 10188531808.

The previous prime is 21650630117. The next prime is 21650630159. The reversal of 21650630126 is 62103605612.

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 = 21650630092 and 21650630101.

It is a congruent number.

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, 318391586 + ... + 318391653.

It is an arithmetic number, because the mean of its divisors is an integer number (4298286870).

Almost surely, 2^21650630126 is an apocalyptic number.

21650630126 is a deficient number, since it is larger than the sum of its proper divisors (12735664834).

21650630126 is a wasteful number, since it uses less digits than its factorization.

21650630126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636783258.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 21650630126 in words is "twenty-one billion, six hundred fifty million, six hundred thirty thousand, one hundred twenty-six".