20430413056 has 36 divisors (see below), whose sum is σ = 41339701732. Its totient is φ = 10075262976.

The previous prime is 20430413053. The next prime is 20430413093. The reversal of 20430413056 is 65031403402.

It can be written as a sum of positive squares in 2 ways, for example, as 15280915456 + 5149497600 = 123616^2 + 71760^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430413053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527931 + ... + 565306.

Almost surely, 2^20430413056 is an apocalyptic number.

It is an amenable number.

20430413056 is an abundant number, since it is smaller than the sum of its proper divisors (20909288676).

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

20430413056 is an equidigital number, since it uses as much as digits as its factorization.

20430413056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093326 (or 1093312 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20430413056 its reverse (65031403402), we get a palindrome (85461816458).

The spelling of 20430413056 in words is "twenty billion, four hundred thirty million, four hundred thirteen thousand, fifty-six".