16144061666 has 8 divisors (see below), whose sum is σ = 24219808704. Its totient is φ = 8070792100.

The previous prime is 16144061623. The next prime is 16144061729. The reversal of 16144061666 is 66616044161.

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

It is a super-2 number, since 2×16144061666² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602990 + ... + 629193.

It is an arithmetic number, because the mean of its divisors is an integer number (3027476088).

Almost surely, 2^16144061666 is an apocalyptic number.

16144061666 is a deficient number, since it is larger than the sum of its proper divisors (8075747038).

16144061666 is a wasteful number, since it uses less digits than its factorization.

16144061666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238736.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 16144061666 in words is "sixteen billion, one hundred forty-four million, sixty-one thousand, six hundred sixty-six".