20330432144 has 40 divisors (see below), whose sum is σ = 43049902368. Its totient is φ = 9224167680.

The previous prime is 20330432131. The next prime is 20330432147. The reversal of 20330432144 is 44123403302.

It is not an unprimeable number, because it can be changed into a prime (20330432147) 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 7 ways as a sum of consecutive naturals, for example, 9317 + ... + 201860.

Almost surely, 2^20330432144 is an apocalyptic number.

It is an amenable number.

20330432144 is an abundant number, since it is smaller than the sum of its proper divisors (22719470224).

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

20330432144 is a wasteful number, since it uses less digits than its factorization.

20330432144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211743 (or 211737 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20330432144 its reverse (44123403302), we get a palindrome (64453835446).

The spelling of 20330432144 in words is "twenty billion, three hundred thirty million, four hundred thirty-two thousand, one hundred forty-four".