2101166983673 has 2 divisors, whose sum is σ = 2101166983674. Its totient is φ = 2101166983672.

The previous prime is 2101166983667. The next prime is 2101166983703. The reversal of 2101166983673 is 3763896611012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2085473909689 + 15693073984 = 1444117^2 + 125272^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101166983673 - 2⁶ = 2101166983609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101166980673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050583491836 + 1050583491837.

It is an arithmetic number, because the mean of its divisors is an integer number (1050583491837).

Almost surely, 2^{2101166983673} is an apocalyptic number.

It is an amenable number.

2101166983673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101166983673 is an equidigital number, since it uses as much as digits as its factorization.

2101166983673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 2101166983673 in words is "two trillion, one hundred one billion, one hundred sixty-six million, nine hundred eighty-three thousand, six hundred seventy-three".