20217652244 has 12 divisors (see below), whose sum is σ = 35418497268. Its totient is φ = 10098081600.

The previous prime is 20217652223. The next prime is 20217652283. The reversal of 20217652244 is 44225671202.

It can be written as a sum of positive squares in 2 ways, for example, as 9670362244 + 10547290000 = 98338^2 + 102700^2 .

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, 2681897 + ... + 2689424.

It is an arithmetic number, because the mean of its divisors is an integer number (2951541439).

Almost surely, 2^20217652244 is an apocalyptic number.

It is an amenable number.

20217652244 is a deficient number, since it is larger than the sum of its proper divisors (15200845024).

20217652244 is a wasteful number, since it uses less digits than its factorization.

20217652244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372266 (or 5372264 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 20217652244 in words is "twenty billion, two hundred seventeen million, six hundred fifty-two thousand, two hundred forty-four".