3641719773666 has 144 divisors (see below), whose sum is σ = 8098348489056. Its totient is φ = 1091051410176.

The previous prime is 3641719773647. The next prime is 3641719773673. The reversal of 3641719773666 is 6663779171463.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3641719773597 and 3641719773606.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 461967361 + ... + 461975243.

It is an arithmetic number, because the mean of its divisors is an integer number (56238531174).

Almost surely, 2^{3641719773666} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3641719773666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4049174244528).

3641719773666 is an abundant number, since it is smaller than the sum of its proper divisors (4456628715390).

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

3641719773666 is a wasteful number, since it uses less digits than its factorization.

3641719773666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8145 (or 8053 counting only the distinct ones).

The product of its digits is 144027072, while the sum is 66.

The spelling of 3641719773666 in words is "three trillion, six hundred forty-one billion, seven hundred nineteen million, seven hundred seventy-three thousand, six hundred sixty-six".