20543403224 has 32 divisors (see below), whose sum is σ = 38634045120. Its totient is φ = 10241039616.

The previous prime is 20543403203. The next prime is 20543403233. The reversal of 20543403224 is 42230434502.

It is a happy number.

It is a super-4 number, since 4×20543403224⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4600817 + ... + 4605279.

It is an arithmetic number, because the mean of its divisors is an integer number (1207313910).

Almost surely, 2^20543403224 is an apocalyptic number.

It is an amenable number.

20543403224 is a deficient number, since it is larger than the sum of its proper divisors (18090641896).

20543403224 is a wasteful number, since it uses less digits than its factorization.

20543403224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6059 (or 6055 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 20543403224 its reverse (42230434502), we get a palindrome (62773837726).

The spelling of 20543403224 in words is "twenty billion, five hundred forty-three million, four hundred three thousand, two hundred twenty-four".