20816605141 has 2 divisors, whose sum is σ = 20816605142. Its totient is φ = 20816605140.

The previous prime is 20816605129. The next prime is 20816605153. The reversal of 20816605141 is 14150661802.

It is a balanced prime because it is at equal distance from previous prime (20816605129) and next prime (20816605153).

It can be written as a sum of positive squares in only one way, i.e., 20388984100 + 427621041 = 142790^2 + 20679^2 .

It is a cyclic number.

It is not a de Polignac number, because 20816605141 - 2¹⁷ = 20816474069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20816605097 and 20816605106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20816605541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10408302570 + 10408302571.

It is an arithmetic number, because the mean of its divisors is an integer number (10408302571).

Almost surely, 2^20816605141 is an apocalyptic number.

It is an amenable number.

20816605141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20816605141 is an equidigital number, since it uses as much as digits as its factorization.

20816605141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 20816605141 in words is "twenty billion, eight hundred sixteen million, six hundred five thousand, one hundred forty-one".