20330344646 has 8 divisors (see below), whose sum is σ = 30496387440. Its totient is φ = 10164882168.

The previous prime is 20330344519. The next prime is 20330344649. The reversal of 20330344646 is 64644303302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330344649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43181 + ... + 206216.

It is an arithmetic number, because the mean of its divisors is an integer number (3812048430).

Almost surely, 2^20330344646 is an apocalyptic number.

20330344646 is a deficient number, since it is larger than the sum of its proper divisors (10166042794).

20330344646 is a wasteful number, since it uses less digits than its factorization.

20330344646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290158.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 20330344646 its reverse (64644303302), we get a palindrome (84974647948).

The spelling of 20330344646 in words is "twenty billion, three hundred thirty million, three hundred forty-four thousand, six hundred forty-six".