1666610565114 has 96 divisors (see below), whose sum is σ = 3885759545472. Its totient is φ = 475155964800.

The previous prime is 1666610565101. The next prime is 1666610565143. The reversal of 1666610565114 is 4115650166661.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200472 + ... + 1836684.

It is an arithmetic number, because the mean of its divisors is an integer number (40476661932).

Almost surely, 2^{1666610565114} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1666610565114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1942879772736).

1666610565114 is an abundant number, since it is smaller than the sum of its proper divisors (2219148980358).

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

1666610565114 is a wasteful number, since it uses less digits than its factorization.

1666610565114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636324 (or 1636313 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 1666610565114 in words is "one trillion, six hundred sixty-six billion, six hundred ten million, five hundred sixty-five thousand, one hundred fourteen".