20609372288 has 24 divisors (see below), whose sum is σ = 41060969805. Its totient is φ = 10303874048.

The previous prime is 20609372281. The next prime is 20609372299. The reversal of 20609372288 is 88227390602.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 16794086464 + 3815285824 = 129592^2 + 61768^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=101512.

It is a super-2 number, since 2×20609372288² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20609372281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1617848 + ... + 1630536.

Almost surely, 2^20609372288 is an apocalyptic number.

It is an amenable number.

20609372288 is a deficient number, since it is larger than the sum of its proper divisors (20451597517).

20609372288 is an frugal number, since it uses more digits than its factorization.

20609372288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25392 (or 12691 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 20609372288 in words is "twenty billion, six hundred nine million, three hundred seventy-two thousand, two hundred eighty-eight".