16191191633 has 8 divisors (see below), whose sum is σ = 16938996480. Its totient is φ = 15460191520.

The previous prime is 16191191617. The next prime is 16191191641. The reversal of 16191191633 is 33619119161.

16191191633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16191191633 - 2⁴ = 16191191617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16191191693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4199213 + ... + 4203066.

It is an arithmetic number, because the mean of its divisors is an integer number (2117374560).

Almost surely, 2^16191191633 is an apocalyptic number.

It is an amenable number.

16191191633 is a deficient number, since it is larger than the sum of its proper divisors (747804847).

16191191633 is an equidigital number, since it uses as much as digits as its factorization.

16191191633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8402367.

The product of its digits is 26244, while the sum is 41.

The spelling of 16191191633 in words is "sixteen billion, one hundred ninety-one million, one hundred ninety-one thousand, six hundred thirty-three".