16191775919 has 8 divisors (see below), whose sum is σ = 18702800208. Its totient is φ = 13853925760.

The previous prime is 16191775909. The next prime is 16191775921. The reversal of 16191775919 is 91957719161.

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 16191775919 - 2⁴ = 16191775903 is a prime.

It is a super-2 number, since 2×16191775919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16191775909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43293332 + ... + 43293705.

It is an arithmetic number, because the mean of its divisors is an integer number (2337850026).

Almost surely, 2^16191775919 is an apocalyptic number.

16191775919 is a deficient number, since it is larger than the sum of its proper divisors (2511024289).

16191775919 is a wasteful number, since it uses less digits than its factorization.

16191775919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86587065.

The product of its digits is 1071630, while the sum is 56.

The spelling of 16191775919 in words is "sixteen billion, one hundred ninety-one million, seven hundred seventy-five thousand, nine hundred nineteen".