2166132343723 has 2 divisors, whose sum is σ = 2166132343724. Its totient is φ = 2166132343722.

The previous prime is 2166132343699. The next prime is 2166132343777. The reversal of 2166132343723 is 3273432316612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2166132343723 - 2⁹ = 2166132343211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2166132343723.

It is not a weakly prime, because it can be changed into another prime (2166132343223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083066171861 + 1083066171862.

It is an arithmetic number, because the mean of its divisors is an integer number (1083066171862).

Almost surely, 2^{2166132343723} is an apocalyptic number.

2166132343723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166132343723 is an equidigital number, since it uses as much as digits as its factorization.

2166132343723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 43.

The spelling of 2166132343723 in words is "two trillion, one hundred sixty-six billion, one hundred thirty-two million, three hundred forty-three thousand, seven hundred twenty-three".