20553440224 has 48 divisors (see below), whose sum is σ = 41044243968. Its totient is φ = 10130545152.

The previous prime is 20553440221. The next prime is 20553440239. The reversal of 20553440224 is 42204435502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20553440221) 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, 621942 + ... + 654154.

It is an arithmetic number, because the mean of its divisors is an integer number (855088416).

Almost surely, 2^20553440224 is an apocalyptic number.

It is an amenable number.

20553440224 is a deficient number, since it is larger than the sum of its proper divisors (20490803744).

20553440224 is a wasteful number, since it uses less digits than its factorization.

20553440224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32507 (or 32499 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 20553440224 its reverse (42204435502), we get a palindrome (62757875726).

The spelling of 20553440224 in words is "twenty billion, five hundred fifty-three million, four hundred forty thousand, two hundred twenty-four".