20331440012 has 12 divisors (see below), whose sum is σ = 38316944736. Its totient is φ = 9383741520.

The previous prime is 20331440011. The next prime is 20331440027. The reversal of 20331440012 is 21004413302.

It is not an unprimeable number, because it can be changed into a prime (20331440011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195494564 + ... + 195494667.

It is an arithmetic number, because the mean of its divisors is an integer number (3193078728).

Almost surely, 2^20331440012 is an apocalyptic number.

It is an amenable number.

20331440012 is a deficient number, since it is larger than the sum of its proper divisors (17985504724).

20331440012 is a wasteful number, since it uses less digits than its factorization.

20331440012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390989248 (or 390989246 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20331440012 its reverse (21004413302), we get a palindrome (41335853314).

The spelling of 20331440012 in words is "twenty billion, three hundred thirty-one million, four hundred forty thousand, twelve".