20330341645446 has 40 divisors (see below), whose sum is σ = 52062885486480. Its totient is φ = 5808669041232.

The previous prime is 20330341645381. The next prime is 20330341645447. The reversal of 20330341645446 is 64454614303302.

It is a happy number.

20330341645446 is a `hidden beast` number, since 2 + 0 + 3 + 3 + 0 + 3 + 41 + 64 + 544 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330341645447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8963994301 + ... + 8963996568.

It is an arithmetic number, because the mean of its divisors is an integer number (1301572137162).

Almost surely, 2^{20330341645446} is an apocalyptic number.

20330341645446 is an abundant number, since it is smaller than the sum of its proper divisors (31732543841034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20330341645446 is a wasteful number, since it uses less digits than its factorization.

20330341645446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17927990890 (or 17927990881 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 45.

Adding to 20330341645446 its reverse (64454614303302), we get a palindrome (84784955948748).

The spelling of 20330341645446 in words is "twenty trillion, three hundred thirty billion, three hundred forty-one million, six hundred forty-five thousand, four hundred forty-six".