20553144324 has 24 divisors (see below), whose sum is σ = 48076942368. Its totient is φ = 6833961600.

The previous prime is 20553144259. The next prime is 20553144413. The reversal of 20553144324 is 42344135502.

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, 2130802 + ... + 2140425.

It is an arithmetic number, because the mean of its divisors is an integer number (2003205932).

Almost surely, 2^20553144324 is an apocalyptic number.

It is an amenable number.

20553144324 is an abundant number, since it is smaller than the sum of its proper divisors (27523798044).

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

20553144324 is a wasteful number, since it uses less digits than its factorization.

20553144324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271635 (or 4271633 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 20553144324 its reverse (42344135502), we get a palindrome (62897279826).

The spelling of 20553144324 in words is "twenty billion, five hundred fifty-three million, one hundred forty-four thousand, three hundred twenty-four".