16002003444465 has 16 divisors (see below), whose sum is σ = 25605320545728. Its totient is φ = 8533696825536.

The previous prime is 16002003444451. The next prime is 16002003444481. The reversal of 16002003444465 is 56444430020061.

It is not a de Polignac number, because 16002003444465 - 2⁹ = 16002003443953 is a prime.

It is a super-2 number, since 2×16002003444465² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43875562 + ... + 44238771.

It is an arithmetic number, because the mean of its divisors is an integer number (1600332534108).

Almost surely, 2^{16002003444465} is an apocalyptic number.

16002003444465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16002003444465 is a deficient number, since it is larger than the sum of its proper divisors (9603317101263).

16002003444465 is a wasteful number, since it uses less digits than its factorization.

16002003444465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88126448.

The product of its (nonzero) digits is 276480, while the sum is 39.

The spelling of 16002003444465 in words is "sixteen trillion, two billion, three million, four hundred forty-four thousand, four hundred sixty-five".