20038413861 has 12 divisors (see below), whose sum is σ = 29726656492. Its totient is φ = 12997889856.

The previous prime is 20038413839. The next prime is 20038413917. The reversal of 20038413861 is 16831483002.

20038413861 is a `hidden beast` number, since 200 + 38 + 41 + 386 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19372464225 + 665949636 = 139185^2 + 25806^2 .

It is not a de Polignac number, because 20038413861 - 2³⁰ = 18964672037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20038412861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30087376 + ... + 30088041.

Almost surely, 2^20038413861 is an apocalyptic number.

It is an amenable number.

20038413861 is a deficient number, since it is larger than the sum of its proper divisors (9688242631).

20038413861 is a wasteful number, since it uses less digits than its factorization.

20038413861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60175460 (or 60175457 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

Adding to 20038413861 its reverse (16831483002), we get a palindrome (36869896863).

The spelling of 20038413861 in words is "twenty billion, thirty-eight million, four hundred thirteen thousand, eight hundred sixty-one".