2166132343777 has 2 divisors, whose sum is σ = 2166132343778. Its totient is φ = 2166132343776.

The previous prime is 2166132343723. The next prime is 2166132343813. The reversal of 2166132343777 is 7773432316612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2165324022016 + 808321761 = 1471504^2 + 28431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166132343777 is a prime.

It is not a weakly prime, because it can be changed into another prime (2166132343877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083066171888 + 1083066171889.

It is an arithmetic number, because the mean of its divisors is an integer number (1083066171889).

Almost surely, 2^{2166132343777} is an apocalyptic number.

It is an amenable number.

2166132343777 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166132343777 is an equidigital number, since it uses as much as digits as its factorization.

2166132343777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5334336, while the sum is 52.

The spelling of 2166132343777 in words is "two trillion, one hundred sixty-six billion, one hundred thirty-two million, three hundred forty-three thousand, seven hundred seventy-seven".