2166132343643 has 2 divisors, whose sum is σ = 2166132343644. Its totient is φ = 2166132343642.

The previous prime is 2166132343603. The next prime is 2166132343699. The reversal of 2166132343643 is 3463432316612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2166132343643 - 2³⁶ = 2097412866907 is a prime.

It is a super-2 number, since 2×2166132343643² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2166132343594 and 2166132343603.

It is not a weakly prime, because it can be changed into another prime (2166132343603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083066171821 + 1083066171822.

It is an arithmetic number, because the mean of its divisors is an integer number (1083066171822).

Almost surely, 2^{2166132343643} is an apocalyptic number.

2166132343643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166132343643 is an equidigital number, since it uses as much as digits as its factorization.

2166132343643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 44.

The spelling of 2166132343643 in words is "two trillion, one hundred sixty-six billion, one hundred thirty-two million, three hundred forty-three thousand, six hundred forty-three".