16235469805 has 4 divisors (see below), whose sum is σ = 19482563772. Its totient is φ = 12988375840.

The previous prime is 16235469787. The next prime is 16235469821. The reversal of 16235469805 is 50896453261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50896453261 = 4759 ⋅10694779.

It can be written as a sum of positive squares in 2 ways, for example, as 10809968841 + 5425500964 = 103971^2 + 73658^2 .

It is not a de Polignac number, because 16235469805 - 2⁵ = 16235469773 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623546976 + ... + 1623546985.

It is an arithmetic number, because the mean of its divisors is an integer number (4870640943).

Almost surely, 2^16235469805 is an apocalyptic number.

It is an amenable number.

16235469805 is a deficient number, since it is larger than the sum of its proper divisors (3247093967).

16235469805 is an equidigital number, since it uses as much as digits as its factorization.

16235469805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247093966.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 16235469805 in words is "sixteen billion, two hundred thirty-five million, four hundred sixty-nine thousand, eight hundred five".