1666610104344 has 16 divisors (see below), whose sum is σ = 4166525260920. Its totient is φ = 555536701440.

The previous prime is 1666610104307. The next prime is 1666610104349. The reversal of 1666610104344 is 4434010166661.

It is a junction number, because it is equal to n+sod(n) for n = 1666610104296 and 1666610104305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666610104349) 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, 34721043817 + ... + 34721043864.

Almost surely, 2^{1666610104344} is an apocalyptic number.

It is an amenable number.

1666610104344 is an abundant number, since it is smaller than the sum of its proper divisors (2499915156576).

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

1666610104344 is a wasteful number, since it uses less digits than its factorization.

1666610104344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69442087690 (or 69442087686 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 1666610104344 in words is "one trillion, six hundred sixty-six billion, six hundred ten million, one hundred four thousand, three hundred forty-four".