1666045130144 has 24 divisors (see below), whose sum is σ = 3288820009860. Its totient is φ = 830789254656.

The previous prime is 1666045130137. The next prime is 1666045130149. The reversal of 1666045130144 is 4410315406661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1654464787600 + 11580342544 = 1286260^2 + 107612^2 .

It is not an unprimeable number, because it can be changed into a prime (1666045130149) 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 3 ways as a sum of consecutive naturals, for example, 69778829 + ... + 69802700.

Almost surely, 2^{1666045130144} is an apocalyptic number.

It is an amenable number.

1666045130144 is a deficient number, since it is larger than the sum of its proper divisors (1622774879716).

1666045130144 is a wasteful number, since it uses less digits than its factorization.

1666045130144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139581912 (or 139581904 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 1666045130144 in words is "one trillion, six hundred sixty-six billion, forty-five million, one hundred thirty thousand, one hundred forty-four".