1666106106151 has 4 divisors (see below), whose sum is σ = 1697542070472. Its totient is φ = 1634670141832.

The previous prime is 1666106106149. The next prime is 1666106106167. The reversal of 1666106106151 is 1516016016661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1666106106151 - 2¹ = 1666106106149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666106106251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15717982081 + ... + 15717982186.

It is an arithmetic number, because the mean of its divisors is an integer number (424385517618).

Almost surely, 2^{1666106106151} is an apocalyptic number.

1666106106151 is a deficient number, since it is larger than the sum of its proper divisors (31435964321).

1666106106151 is an equidigital number, since it uses as much as digits as its factorization.

1666106106151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31435964320.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 1666106106151 in words is "one trillion, six hundred sixty-six billion, one hundred six million, one hundred six thousand, one hundred fifty-one".