21032246650 has 48 divisors (see below), whose sum is σ = 41196916800. Its totient is φ = 7966632960.

The previous prime is 21032246647. The next prime is 21032246689. The reversal of 21032246650 is 5664223012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3530074 + ... + 3536026.

It is an arithmetic number, because the mean of its divisors is an integer number (858269100).

Almost surely, 2^21032246650 is an apocalyptic number.

21032246650 is a deficient number, since it is larger than the sum of its proper divisors (20164670150).

21032246650 is a wasteful number, since it uses less digits than its factorization.

21032246650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9703 (or 9698 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 21032246650 its reverse (5664223012), we get a palindrome (26696469662).

The spelling of 21032246650 in words is "twenty-one billion, thirty-two million, two hundred forty-six thousand, six hundred fifty".