16677316655321 has 16 divisors (see below), whose sum is σ = 19449065040000. Its totient is φ = 14294622891024.

The previous prime is 16677316655309. The next prime is 16677316655323. The reversal of 16677316655321 is 12355661377661.

It is not a de Polignac number, because 16677316655321 - 2³⁰ = 16676242913497 is a prime.

It is a super-2 number, since 2×16677316655321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16677316655323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24323231 + ... + 24999483.

It is an arithmetic number, because the mean of its divisors is an integer number (1215566565000).

Almost surely, 2^{16677316655321} is an apocalyptic number.

It is an amenable number.

16677316655321 is a deficient number, since it is larger than the sum of its proper divisors (2771748384679).

16677316655321 is an frugal number, since it uses more digits than its factorization.

16677316655321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748173 (or 748159 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 59.

The spelling of 16677316655321 in words is "sixteen trillion, six hundred seventy-seven billion, three hundred sixteen million, six hundred fifty-five thousand, three hundred twenty-one".