16168936817 has 24 divisors (see below), whose sum is σ = 18401650176. Its totient is φ = 14181552000.

The previous prime is 16168936799. The next prime is 16168936829. The reversal of 16168936817 is 71863986161.

It is not a de Polignac number, because 16168936817 - 2¹⁰ = 16168935793 is a prime.

It is a super-2 number, since 2×16168936817² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16168936837) 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, 1257692 + ... + 1270482.

It is an arithmetic number, because the mean of its divisors is an integer number (766735424).

Almost surely, 2^16168936817 is an apocalyptic number.

It is an amenable number.

16168936817 is a deficient number, since it is larger than the sum of its proper divisors (2232713359).

16168936817 is a wasteful number, since it uses less digits than its factorization.

16168936817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13181 (or 13170 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 56.

The spelling of 16168936817 in words is "sixteen billion, one hundred sixty-eight million, nine hundred thirty-six thousand, eight hundred seventeen".