1666135101 has 16 divisors (see below), whose sum is σ = 2270942208. Its totient is φ = 1086087600.

The previous prime is 1666135073. The next prime is 1666135109. The reversal of 1666135101 is 1015316661.

It is not a de Polignac number, because 1666135101 - 2¹⁴ = 1666118717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666135109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160066 + ... + 170156.

It is an arithmetic number, because the mean of its divisors is an integer number (141933888).

Almost surely, 2^1666135101 is an apocalyptic number.

It is an amenable number.

1666135101 is a deficient number, since it is larger than the sum of its proper divisors (604807107).

1666135101 is a wasteful number, since it uses less digits than its factorization.

1666135101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11312.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1666135101 is about 40818.3182039633. The cubic root of 1666135101 is about 1185.5050399364.

The spelling of 1666135101 in words is "one billion, six hundred sixty-six million, one hundred thirty-five thousand, one hundred one".