16195786689 has 16 divisors (see below), whose sum is σ = 21888359360. Its totient is φ = 10651193280.

The previous prime is 16195786609. The next prime is 16195786709. The reversal of 16195786689 is 98668759161.

It is not a de Polignac number, because 16195786689 - 2⁸ = 16195786433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16195786609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58222 + ... + 189159.

It is an arithmetic number, because the mean of its divisors is an integer number (1368022460).

Almost surely, 2^16195786689 is an apocalyptic number.

It is an amenable number.

16195786689 is a deficient number, since it is larger than the sum of its proper divisors (5692572671).

16195786689 is a wasteful number, since it uses less digits than its factorization.

16195786689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247680.

The product of its digits is 39191040, while the sum is 66.

The spelling of 16195786689 in words is "sixteen billion, one hundred ninety-five million, seven hundred eighty-six thousand, six hundred eighty-nine".