166661036383 has 2 divisors, whose sum is σ = 166661036384. Its totient is φ = 166661036382.

The previous prime is 166661036369. The next prime is 166661036387. The reversal of 166661036383 is 383630166661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166661036383 - 2⁵ = 166661036351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166661036387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83330518191 + 83330518192.

It is an arithmetic number, because the mean of its divisors is an integer number (83330518192).

Almost surely, 2^166661036383 is an apocalyptic number.

166661036383 is a deficient number, since it is larger than the sum of its proper divisors (1).

166661036383 is an equidigital number, since it uses as much as digits as its factorization.

166661036383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 166661036383 in words is "one hundred sixty-six billion, six hundred sixty-one million, thirty-six thousand, three hundred eighty-three".