166106426898427 has 2 divisors, whose sum is σ = 166106426898428. Its totient is φ = 166106426898426.

The previous prime is 166106426898353. The next prime is 166106426898473. The reversal of 166106426898427 is 724898624601661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166106426898427 - 2¹¹ = 166106426896379 is a prime.

It is not a weakly prime, because it can be changed into another prime (166106426898127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83053213449213 + 83053213449214.

It is an arithmetic number, because the mean of its divisors is an integer number (83053213449214).

Almost surely, 2^{166106426898427} is an apocalyptic number.

166106426898427 is a deficient number, since it is larger than the sum of its proper divisors (1).

166106426898427 is an equidigital number, since it uses as much as digits as its factorization.

166106426898427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 334430208, while the sum is 70.

The spelling of 166106426898427 in words is "one hundred sixty-six trillion, one hundred six billion, four hundred twenty-six million, eight hundred ninety-eight thousand, four hundred twenty-seven".