20469597184 has 99 divisors (see below), whose sum is σ = 43633710757. Its totient is φ = 9596125184.

The previous prime is 20469597173. The next prime is 20469597227. The reversal of 20469597184 is 48179596402.

The square root of 20469597184 is 143072.

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

It can be written as a sum of positive squares in only one way, i.e., 15936537600 + 4533059584 = 126240^2 + 67328^2 .

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, 77831037 + ... + 77831299.

Almost surely, 2^20469597184 is an apocalyptic number.

20469597184 is the 143072-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20469597184

20469597184 is an abundant number, since it is smaller than the sum of its proper divisors (23164113573).

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

20469597184 is an frugal number, since it uses more digits than its factorization.

20469597184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 20469597184 in words is "twenty billion, four hundred sixty-nine million, five hundred ninety-seven thousand, one hundred eighty-four".