2166368626853 has 2 divisors, whose sum is σ = 2166368626854. Its totient is φ = 2166368626852.

The previous prime is 2166368626843. The next prime is 2166368626867. The reversal of 2166368626853 is 3586268636612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2016987922849 + 149380704004 = 1420207^2 + 386498^2 .

It is a cyclic number.

It is not a de Polignac number, because 2166368626853 - 2²⁸ = 2166100191397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2166368626843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083184313426 + 1083184313427.

It is an arithmetic number, because the mean of its divisors is an integer number (1083184313427).

Almost surely, 2^{2166368626853} is an apocalyptic number.

It is an amenable number.

2166368626853 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166368626853 is an equidigital number, since it uses as much as digits as its factorization.

2166368626853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 89579520, while the sum is 62.

The spelling of 2166368626853 in words is "two trillion, one hundred sixty-six billion, three hundred sixty-eight million, six hundred twenty-six thousand, eight hundred fifty-three".