2166213266603 has 2 divisors, whose sum is σ = 2166213266604. Its totient is φ = 2166213266602.

The previous prime is 2166213266527. The next prime is 2166213266671. The reversal of 2166213266603 is 3066623126612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166213266603 is a prime.

It is not a weakly prime, because it can be changed into another prime (2166213266803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083106633301 + 1083106633302.

It is an arithmetic number, because the mean of its divisors is an integer number (1083106633302).

Almost surely, 2^{2166213266603} is an apocalyptic number.

2166213266603 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166213266603 is an equidigital number, since it uses as much as digits as its factorization.

2166213266603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 44.

The spelling of 2166213266603 in words is "two trillion, one hundred sixty-six billion, two hundred thirteen million, two hundred sixty-six thousand, six hundred three".