16641728275887 has 384 divisors, whose sum is σ = 31011695769600. Its totient is φ = 8447846400000.

The previous prime is 16641728275847. The next prime is 16641728275891. The reversal of 16641728275887 is 78857282714661.

16641728275887 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 17 + 2 + 8 + 27 + 588 + 7 = 666.

It is not a de Polignac number, because 16641728275887 - 2¹⁶ = 16641728210351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16641728275847) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 27690063387 + ... + 27690063987.

It is an arithmetic number, because the mean of its divisors is an integer number (80759624400).

Almost surely, 2^{16641728275887} is an apocalyptic number.

16641728275887 is a deficient number, since it is larger than the sum of its proper divisors (14369967493713).

16641728275887 is a wasteful number, since it uses less digits than its factorization.

16641728275887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1148 counting only the distinct ones).

The product of its digits is 505774080, while the sum is 72.

The spelling of 16641728275887 in words is "sixteen trillion, six hundred forty-one billion, seven hundred twenty-eight million, two hundred seventy-five thousand, eight hundred eighty-seven".