16728167777 has 8 divisors (see below), whose sum is σ = 17636516160. Its totient is φ = 15822611280.

The previous prime is 16728167699. The next prime is 16728167783. The reversal of 16728167777 is 77776182761.

16728167777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16728167777 - 2¹⁶ = 16728102241 is a prime.

It is a super-2 number, since 2×16728167777² (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 (16728167377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685658 + ... + 709635.

It is an arithmetic number, because the mean of its divisors is an integer number (2204564520).

Almost surely, 2^16728167777 is an apocalyptic number.

It is an amenable number.

16728167777 is a deficient number, since it is larger than the sum of its proper divisors (908348383).

16728167777 is a wasteful number, since it uses less digits than its factorization.

16728167777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395943.

The product of its digits is 9680832, while the sum is 59.

The spelling of 16728167777 in words is "sixteen billion, seven hundred twenty-eight million, one hundred sixty-seven thousand, seven hundred seventy-seven".