20320026544 has 40 divisors (see below), whose sum is σ = 39941586432. Its totient is φ = 10012746240.

The previous prime is 20320026541. The next prime is 20320026553. The reversal of 20320026544 is 44562002302.

It is not an unprimeable number, because it can be changed into a prime (20320026541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1597329 + ... + 1609999.

Almost surely, 2^20320026544 is an apocalyptic number.

It is an amenable number.

20320026544 is a deficient number, since it is larger than the sum of its proper divisors (19621559888).

20320026544 is a wasteful number, since it uses less digits than its factorization.

20320026544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14125 (or 14119 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20320026544 its reverse (44562002302), we get a palindrome (64882028846).

The spelling of 20320026544 in words is "twenty billion, three hundred twenty million, twenty-six thousand, five hundred forty-four".