20143557184 has 63 divisors (see below), whose sum is σ = 40587749787. Its totient is φ = 9919064064.

The previous prime is 20143557163. The next prime is 20143557197. The reversal of 20143557184 is 48175534102.

The square root of 20143557184 is 141928.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11679557184 + 8464000000 = 108072^2 + 92000^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 128302834 + ... + 128302990.

Almost surely, 2^20143557184 is an apocalyptic number.

20143557184 is the 141928-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20143557184

20143557184 is an abundant number, since it is smaller than the sum of its proper divisors (20444192603).

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

20143557184 is an frugal number, since it uses more digits than its factorization.

20143557184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 20143557184 in words is "twenty billion, one hundred forty-three million, five hundred fifty-seven thousand, one hundred eighty-four".