1667652047012 has 72 divisors (see below), whose sum is σ = 3551709033600. Its totient is φ = 671020379136.

The previous prime is 1667652046937. The next prime is 1667652047053. The reversal of 1667652047012 is 2107402567661.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3057689 + ... + 3561567.

Almost surely, 2^{1667652047012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1667652047012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1775854516800).

1667652047012 is an abundant number, since it is smaller than the sum of its proper divisors (1884056986588).

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

1667652047012 is a wasteful number, since it uses less digits than its factorization.

1667652047012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504333 (or 504314 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 1667652047012 in words is "one trillion, six hundred sixty-seven billion, six hundred fifty-two million, forty-seven thousand, twelve".