20330341645447 has 2 divisors, whose sum is σ = 20330341645448. Its totient is φ = 20330341645446.

The previous prime is 20330341645381. The next prime is 20330341645487. The reversal of 20330341645447 is 74454614303302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20330341645447 - 2³⁵ = 20295981907079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20330341645397 and 20330341645406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20330341645487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165170822723 + 10165170822724.

It is an arithmetic number, because the mean of its divisors is an integer number (10165170822724).

Almost surely, 2^{20330341645447} is an apocalyptic number.

20330341645447 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330341645447 is an equidigital number, since it uses as much as digits as its factorization.

20330341645447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 46.

Adding to 20330341645447 its reverse (74454614303302), we get a palindrome (94784955948749).

The spelling of 20330341645447 in words is "twenty trillion, three hundred thirty billion, three hundred forty-one million, six hundred forty-five thousand, four hundred forty-seven".