16719066889 has 8 divisors (see below), whose sum is σ = 19109432768. Its totient is φ = 14329182960.

The previous prime is 16719066877. The next prime is 16719066899. The reversal of 16719066889 is 98866091761.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16719066889 is a prime.

It is a super-2 number, since 2×16719066889² (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 (16719066899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42807 + ... + 187804.

It is an arithmetic number, because the mean of its divisors is an integer number (2388679096).

Almost surely, 2^16719066889 is an apocalyptic number.

It is an amenable number.

16719066889 is a deficient number, since it is larger than the sum of its proper divisors (2390365879).

16719066889 is a wasteful number, since it uses less digits than its factorization.

16719066889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240975.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The spelling of 16719066889 in words is "sixteen billion, seven hundred nineteen million, sixty-six thousand, eight hundred eighty-nine".