20322343233551 has 2 divisors, whose sum is σ = 20322343233552. Its totient is φ = 20322343233550.

The previous prime is 20322343233481. The next prime is 20322343233571. The reversal of 20322343233551 is 15533234322302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20322343233551 is a prime.

It is a super-2 number, since 2×20322343233551² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20322343233571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161171616775 + 10161171616776.

It is an arithmetic number, because the mean of its divisors is an integer number (10161171616776).

Almost surely, 2^{20322343233551} is an apocalyptic number.

20322343233551 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322343233551 is an equidigital number, since it uses as much as digits as its factorization.

20322343233551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 38.

Adding to 20322343233551 its reverse (15533234322302), we get a palindrome (35855577555853).

The spelling of 20322343233551 in words is "twenty trillion, three hundred twenty-two billion, three hundred forty-three million, two hundred thirty-three thousand, five hundred fifty-one".