16556067660544 has 18 divisors (see below), whose sum is σ = 33047463182300. Its totient is φ = 8278033830144.

The previous prime is 16556067660479. The next prime is 16556067660569. The reversal of 16556067660544 is 44506676065561.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32336069394 + ... + 32336069905.

Almost surely, 2^{16556067660544} is an apocalyptic number.

It is an amenable number.

16556067660544 is a deficient number, since it is larger than the sum of its proper divisors (16491395521756).

16556067660544 is an frugal number, since it uses more digits than its factorization.

16556067660544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64672139315 (or 64672139301 counting only the distinct ones).

The product of its (nonzero) digits is 108864000, while the sum is 61.

The spelling of 16556067660544 in words is "sixteen trillion, five hundred fifty-six billion, sixty-seven million, six hundred sixty thousand, five hundred forty-four".