4221666671750 has 32 divisors (see below), whose sum is σ = 8621410925088. Its totient is φ = 1535151516000.

The previous prime is 4221666671741. The next prime is 4221666671797. The reversal of 4221666671750 is 571766661224.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4221666671692 and 4221666671701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 767573009 + ... + 767578508.

It is an arithmetic number, because the mean of its divisors is an integer number (269419091409).

Almost surely, 2^{4221666671750} is an apocalyptic number.

4221666671750 is an abundant number, since it is smaller than the sum of its proper divisors (4399744253338).

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

4221666671750 is a wasteful number, since it uses less digits than its factorization.

4221666671750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535151545 (or 1535151535 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 4221666671750 in words is "four trillion, two hundred twenty-one billion, six hundred sixty-six million, six hundred seventy-one thousand, seven hundred fifty".