16047406166221 has 8 divisors (see below), whose sum is σ = 16157739654144. Its totient is φ = 15937346800080.

The previous prime is 16047406166219. The next prime is 16047406166257. The reversal of 16047406166221 is 12266160474061.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16047406166221 - 2¹ = 16047406166219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16047406166291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68412961 + ... + 68647126.

It is an arithmetic number, because the mean of its divisors is an integer number (2019717456768).

Almost surely, 2^{16047406166221} is an apocalyptic number.

It is an amenable number.

16047406166221 is a deficient number, since it is larger than the sum of its proper divisors (110333487923).

16047406166221 is a wasteful number, since it uses less digits than its factorization.

16047406166221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137060891.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 16047406166221 in words is "sixteen trillion, forty-seven billion, four hundred six million, one hundred sixty-six thousand, two hundred twenty-one".