20444132512 has 24 divisors (see below), whose sum is σ = 40276547136. Its totient is φ = 10215168192.

The previous prime is 20444132503. The next prime is 20444132531. The reversal of 20444132512 is 21523144402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167238 + ... + 262405.

It is an arithmetic number, because the mean of its divisors is an integer number (1678189464).

Almost surely, 2^20444132512 is an apocalyptic number.

It is an amenable number.

20444132512 is a deficient number, since it is larger than the sum of its proper divisors (19832414624).

20444132512 is a wasteful number, since it uses less digits than its factorization.

20444132512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431140 (or 431132 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 20444132512 its reverse (21523144402), we get a palindrome (41967276914).

The spelling of 20444132512 in words is "twenty billion, four hundred forty-four million, one hundred thirty-two thousand, five hundred twelve".