20005216232413 has 16 divisors (see below), whose sum is σ = 20848849560000. Its totient is φ = 19171873187712.

The previous prime is 20005216232401. The next prime is 20005216232423. The reversal of 20005216232413 is 31423261250002.

It is a cyclic number.

It is not a de Polignac number, because 20005216232413 - 2⁵ = 20005216232381 is a prime.

It is a super-3 number, since 3×20005216232413³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005216232423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30261118 + ... + 30915136.

It is an arithmetic number, because the mean of its divisors is an integer number (1303053097500).

Almost surely, 2^{20005216232413} is an apocalyptic number.

It is an amenable number.

20005216232413 is a deficient number, since it is larger than the sum of its proper divisors (843633327587).

20005216232413 is a wasteful number, since it uses less digits than its factorization.

20005216232413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661884.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 20005216232413 its reverse (31423261250002), we get a palindrome (51428477482415).

The spelling of 20005216232413 in words is "twenty trillion, five billion, two hundred sixteen million, two hundred thirty-two thousand, four hundred thirteen".