20613422243 has 8 divisors (see below), whose sum is σ = 20670618096. Its totient is φ = 20556256000.

The previous prime is 20613422209. The next prime is 20613422251. The reversal of 20613422243 is 34222431602.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20613422243 - 2¹⁰ = 20613421219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20613422443) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2610980 + ... + 2618862.

It is an arithmetic number, because the mean of its divisors is an integer number (2583827262).

Almost surely, 2^20613422243 is an apocalyptic number.

20613422243 is a deficient number, since it is larger than the sum of its proper divisors (57195853).

20613422243 is an equidigital number, since it uses as much as digits as its factorization.

20613422243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14805.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 20613422243 its reverse (34222431602), we get a palindrome (54835853845).

The spelling of 20613422243 in words is "twenty billion, six hundred thirteen million, four hundred twenty-two thousand, two hundred forty-three".