16643628842877 has 24 divisors (see below), whose sum is σ = 24265991936160. Its totient is φ = 10991820935520.

The previous prime is 16643628842873. The next prime is 16643628842891. The reversal of 16643628842877 is 77824882634661.

16643628842877 is a `hidden beast` number, since 1 + 6 + 6 + 436 + 2 + 88 + 42 + 8 + 77 = 666.

It is not a de Polignac number, because 16643628842877 - 2² = 16643628842873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16643628842873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53405727 + ... + 53716467.

It is an arithmetic number, because the mean of its divisors is an integer number (1011082997340).

Almost surely, 2^{16643628842877} is an apocalyptic number.

It is an amenable number.

16643628842877 is a deficient number, since it is larger than the sum of its proper divisors (7622363093283).

16643628842877 is a wasteful number, since it uses less digits than its factorization.

16643628842877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366473 (or 366470 counting only the distinct ones).

The product of its digits is 1040449536, while the sum is 72.

The spelling of 16643628842877 in words is "sixteen trillion, six hundred forty-three billion, six hundred twenty-eight million, eight hundred forty-two thousand, eight hundred seventy-seven".