16180991493485 has 32 divisors (see below), whose sum is σ = 24406549558272. Its totient is φ = 10024118542080.

The previous prime is 16180991493449. The next prime is 16180991493539. The reversal of 16180991493485 is 58439419908161.

16180991493485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16180991493485 - 2⁸ = 16180991493229 is a prime.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378304346 + ... + 378347115.

It is an arithmetic number, because the mean of its divisors is an integer number (762704673696).

Almost surely, 2^{16180991493485} is an apocalyptic number.

It is an amenable number.

16180991493485 is a deficient number, since it is larger than the sum of its proper divisors (8225558064787).

16180991493485 is a wasteful number, since it uses less digits than its factorization.

16180991493485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756651533.

The product of its (nonzero) digits is 67184640, while the sum is 68.

The spelling of 16180991493485 in words is "sixteen trillion, one hundred eighty billion, nine hundred ninety-one million, four hundred ninety-three thousand, four hundred eighty-five".