20304144552 has 64 divisors (see below), whose sum is σ = 51719040000. Its totient is φ = 6641279424.

The previous prime is 20304144547. The next prime is 20304144563. The reversal of 20304144552 is 25544140302.

It is a super-2 number, since 2×20304144552² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276199 + ... + 341897.

It is an arithmetic number, because the mean of its divisors is an integer number (808110000).

Almost surely, 2^20304144552 is an apocalyptic number.

It is an amenable number.

20304144552 is an abundant number, since it is smaller than the sum of its proper divisors (31414895448).

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

20304144552 is a wasteful number, since it uses less digits than its factorization.

20304144552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65950 (or 65946 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20304144552 its reverse (25544140302), we get a palindrome (45848284854).

The spelling of 20304144552 in words is "twenty billion, three hundred four million, one hundred forty-four thousand, five hundred fifty-two".