16673227881 has 4 divisors (see below), whose sum is σ = 22230970512. Its totient is φ = 11115485252.

The previous prime is 16673227877. The next prime is 16673227913. The reversal of 16673227881 is 18872237661.

16673227881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18872237661 = 3 ⋅6290745887.

It is a cyclic number.

It is not a de Polignac number, because 16673227881 - 2² = 16673227877 is a prime.

It is a super-2 number, since 2×16673227881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16673227801) 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 3 ways as a sum of consecutive naturals, for example, 2778871311 + ... + 2778871316.

It is an arithmetic number, because the mean of its divisors is an integer number (5557742628).

Almost surely, 2^16673227881 is an apocalyptic number.

It is an amenable number.

16673227881 is a deficient number, since it is larger than the sum of its proper divisors (5557742631).

16673227881 is an equidigital number, since it uses as much as digits as its factorization.

16673227881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557742630.

The product of its digits is 1354752, while the sum is 51.

The spelling of 16673227881 in words is "sixteen billion, six hundred seventy-three million, two hundred twenty-seven thousand, eight hundred eighty-one".