16091489999 has 8 divisors (see below), whose sum is σ = 17491254480. Its totient is φ = 14714862336.

The previous prime is 16091489993. The next prime is 16091490011. The reversal of 16091489999 is 99998419061.

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

It is a cyclic number.

It is not a de Polignac number, because 16091489999 - 2¹² = 16091485903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16091489993) 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, 5782754 + ... + 5785535.

It is an arithmetic number, because the mean of its divisors is an integer number (2186406810).

Almost surely, 2^16091489999 is an apocalyptic number.

16091489999 is a deficient number, since it is larger than the sum of its proper divisors (1399764481).

16091489999 is a wasteful number, since it uses less digits than its factorization.

16091489999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11568409.

The product of its (nonzero) digits is 11337408, while the sum is 65.

The spelling of 16091489999 in words is "sixteen billion, ninety-one million, four hundred eighty-nine thousand, nine hundred ninety-nine".