1666061869094 has 16 divisors (see below), whose sum is σ = 2856123866400. Its totient is φ = 714022064064.

The previous prime is 1666061869093. The next prime is 1666061869189. The reversal of 1666061869094 is 4909681606661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666061869093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3030602 + ... + 3537890.

It is an arithmetic number, because the mean of its divisors is an integer number (178507741650).

Almost surely, 2^{1666061869094} is an apocalyptic number.

1666061869094 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1666061869094 is a deficient number, since it is larger than the sum of its proper divisors (1190061997306).

1666061869094 is a wasteful number, since it uses less digits than its factorization.

1666061869094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741887.

The product of its (nonzero) digits is 20155392, while the sum is 62.

The spelling of 1666061869094 in words is "one trillion, six hundred sixty-six billion, sixty-one million, eight hundred sixty-nine thousand, ninety-four".