1666342406662 has 8 divisors (see below), whose sum is σ = 2500949292192. Its totient is φ = 832692642600.

The previous prime is 1666342406653. The next prime is 1666342406713. The reversal of 1666342406662 is 2666042436661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239276014 + ... + 239282977.

It is an arithmetic number, because the mean of its divisors is an integer number (312618661524).

Almost surely, 2^{1666342406662} is an apocalyptic number.

1666342406662 is a deficient number, since it is larger than the sum of its proper divisors (834606885530).

1666342406662 is a wasteful number, since it uses less digits than its factorization.

1666342406662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478560734.

The product of its (nonzero) digits is 8957952, while the sum is 52.

Subtracting 1666342406662 from its reverse (2666042436661), we obtain a cube (999700029999 = 9999³).

The spelling of 1666342406662 in words is "one trillion, six hundred sixty-six billion, three hundred forty-two million, four hundred six thousand, six hundred sixty-two".