20323632064643 has 2 divisors, whose sum is σ = 20323632064644. Its totient is φ = 20323632064642.

The previous prime is 20323632064627. The next prime is 20323632064693. The reversal of 20323632064643 is 34646023632302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20323632064643 - 2⁴ = 20323632064627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323632064594 and 20323632064603.

It is not a weakly prime, because it can be changed into another prime (20323632064613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161816032321 + 10161816032322.

It is an arithmetic number, because the mean of its divisors is an integer number (10161816032322).

Almost surely, 2^{20323632064643} is an apocalyptic number.

20323632064643 is a deficient number, since it is larger than the sum of its proper divisors (1).

20323632064643 is an equidigital number, since it uses as much as digits as its factorization.

20323632064643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 44.

Adding to 20323632064643 its reverse (34646023632302), we get a palindrome (54969655696945).

The spelling of 20323632064643 in words is "twenty trillion, three hundred twenty-three billion, six hundred thirty-two million, sixty-four thousand, six hundred forty-three".