1666761676086 has 16 divisors (see below), whose sum is σ = 3589948225584. Its totient is φ = 512849746464.

The previous prime is 1666761676043. The next prime is 1666761676121. The reversal of 1666761676086 is 6806761676661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10684369641 + ... + 10684369796.

It is an arithmetic number, because the mean of its divisors is an integer number (224371764099).

Almost surely, 2^{1666761676086} is an apocalyptic number.

1666761676086 is an abundant number, since it is smaller than the sum of its proper divisors (1923186549498).

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

1666761676086 is a wasteful number, since it uses less digits than its factorization.

1666761676086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21368739455.

The product of its (nonzero) digits is 109734912, while the sum is 66.

The spelling of 1666761676086 in words is "one trillion, six hundred sixty-six billion, seven hundred sixty-one million, six hundred seventy-six thousand, eighty-six".