2816171510261 has 2 divisors, whose sum is σ = 2816171510262. Its totient is φ = 2816171510260.

The previous prime is 2816171510239. The next prime is 2816171510281. The reversal of 2816171510261 is 1620151716182.

2816171510261 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2059956915025 + 756214595236 = 1435255^2 + 869606^2 .

It is a cyclic number.

It is not a de Polignac number, because 2816171510261 - 2³⁴ = 2798991641077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2816171510281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1408085755130 + 1408085755131.

It is an arithmetic number, because the mean of its divisors is an integer number (1408085755131).

Almost surely, 2^{2816171510261} is an apocalyptic number.

It is an amenable number.

2816171510261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2816171510261 is an equidigital number, since it uses as much as digits as its factorization.

2816171510261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 41.

The spelling of 2816171510261 in words is "two trillion, eight hundred sixteen billion, one hundred seventy-one million, five hundred ten thousand, two hundred sixty-one".