1666766850102 has 192 divisors, whose sum is σ = 3932457984000. Its totient is φ = 508566449664.

The previous prime is 1666766850097. The next prime is 1666766850131. The reversal of 1666766850102 is 2010586676661.

It is a super-2 number, since 2×1666766850102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 319975674 + ... + 319980882.

It is an arithmetic number, because the mean of its divisors is an integer number (20481552000).

Almost surely, 2^{1666766850102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1666766850102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966228992000).

1666766850102 is an abundant number, since it is smaller than the sum of its proper divisors (2265691133898).

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

1666766850102 is a wasteful number, since it uses less digits than its factorization.

1666766850102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555 (or 5552 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 1666766850102 in words is "one trillion, six hundred sixty-six billion, seven hundred sixty-six million, eight hundred fifty thousand, one hundred two".