1666818183340 has 12 divisors (see below), whose sum is σ = 3500318185056. Its totient is φ = 666727273328.

The previous prime is 1666818183337. The next prime is 1666818183341. The reversal of 1666818183340 is 433818186661.

It is not an unprimeable number, because it can be changed into a prime (1666818183341) 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, 41670454564 + ... + 41670454603.

It is an arithmetic number, because the mean of its divisors is an integer number (291693182088).

Almost surely, 2^{1666818183340} is an apocalyptic number.

1666818183340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1666818183340 is an abundant number, since it is smaller than the sum of its proper divisors (1833500001716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1666818183340 is a wasteful number, since it uses less digits than its factorization.

1666818183340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83340909176 (or 83340909174 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 1666818183340 in words is "one trillion, six hundred sixty-six billion, eight hundred eighteen million, one hundred eighty-three thousand, three hundred forty".