20372331544 has 32 divisors (see below), whose sum is σ = 40248702000. Its totient is φ = 9640415232.

The previous prime is 20372331541. The next prime is 20372331557. The reversal of 20372331544 is 44513327302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372331541) 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, 86952 + ... + 219784.

Almost surely, 2^20372331544 is an apocalyptic number.

It is an amenable number.

20372331544 is a deficient number, since it is larger than the sum of its proper divisors (19876370456).

20372331544 is a wasteful number, since it uses less digits than its factorization.

20372331544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133867 (or 133863 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 34.

Adding to 20372331544 its reverse (44513327302), we get a palindrome (64885658846).

The spelling of 20372331544 in words is "twenty billion, three hundred seventy-two million, three hundred thirty-one thousand, five hundred forty-four".