2166611267903 has 2 divisors, whose sum is σ = 2166611267904. Its totient is φ = 2166611267902.

The previous prime is 2166611267893. The next prime is 2166611267911. The reversal of 2166611267903 is 3097621166612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2166611267903 - 2¹⁶ = 2166611202367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2166611267923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083305633951 + 1083305633952.

It is an arithmetic number, because the mean of its divisors is an integer number (1083305633952).

Almost surely, 2^{2166611267903} is an apocalyptic number.

2166611267903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166611267903 is an equidigital number, since it uses as much as digits as its factorization.

2166611267903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 2166611267903 in words is "two trillion, one hundred sixty-six billion, six hundred eleven million, two hundred sixty-seven thousand, nine hundred three".