20623211224 has 128 divisors (see below), whose sum is σ = 51118801920. Its totient is φ = 7551590400.

The previous prime is 20623211197. The next prime is 20623211269. The reversal of 20623211224 is 42211232602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14251669 + ... + 14253115.

It is an arithmetic number, because the mean of its divisors is an integer number (399365640).

Almost surely, 2^20623211224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20623211224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25559400960).

20623211224 is an abundant number, since it is smaller than the sum of its proper divisors (30495590696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20623211224 is a wasteful number, since it uses less digits than its factorization.

20623211224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20623211224 its reverse (42211232602), we get a palindrome (62834443826).

The spelling of 20623211224 in words is "twenty billion, six hundred twenty-three million, two hundred eleven thousand, two hundred twenty-four".