16433739953 has 4 divisors (see below), whose sum is σ = 16703145588. Its totient is φ = 16164334320.

The previous prime is 16433739943. The next prime is 16433739983. The reversal of 16433739953 is 35993733461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1327363489 + 15106376464 = 36433^2 + 122908^2 .

It is a cyclic number.

It is not a de Polignac number, because 16433739953 - 2¹⁴ = 16433723569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16433739895 and 16433739904.

It is not an unprimeable number, because it can be changed into a prime (16433739943) 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 3 ways as a sum of consecutive naturals, for example, 134702726 + ... + 134702847.

It is an arithmetic number, because the mean of its divisors is an integer number (4175786397).

Almost surely, 2^16433739953 is an apocalyptic number.

It is an amenable number.

16433739953 is a deficient number, since it is larger than the sum of its proper divisors (269405635).

16433739953 is an equidigital number, since it uses as much as digits as its factorization.

16433739953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269405634.

The product of its digits is 5511240, while the sum is 53.

The spelling of 16433739953 in words is "sixteen billion, four hundred thirty-three million, seven hundred thirty-nine thousand, nine hundred fifty-three".