20322243420551 has 8 divisors (see below), whose sum is σ = 20343915650880. Its totient is φ = 20300581573632.

The previous prime is 20322243420533. The next prime is 20322243420581. The reversal of 20322243420551 is 15502434222302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20322243420551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322243420581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323755 + ... + 6511283.

It is an arithmetic number, because the mean of its divisors is an integer number (2542989456360).

Almost surely, 2^{20322243420551} is an apocalyptic number.

20322243420551 is a deficient number, since it is larger than the sum of its proper divisors (21672230329).

20322243420551 is a wasteful number, since it uses less digits than its factorization.

20322243420551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5191705.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 20322243420551 its reverse (15502434222302), we get a palindrome (35824677642853).

The spelling of 20322243420551 in words is "twenty trillion, three hundred twenty-two billion, two hundred forty-three million, four hundred twenty thousand, five hundred fifty-one".