16533466403 has 4 divisors (see below), whose sum is σ = 16537369128. Its totient is φ = 16529563680.

The previous prime is 16533466363. The next prime is 16533466427. The reversal of 16533466403 is 30466433561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30466433561 = 66821 ⋅455941.

It is a cyclic number.

It is not a de Polignac number, because 16533466403 - 2²⁰ = 16532417827 is a prime.

It is a super-2 number, since 2×16533466403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16533460403) 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, 1945001 + ... + 1953482.

It is an arithmetic number, because the mean of its divisors is an integer number (4134342282).

Almost surely, 2^16533466403 is an apocalyptic number.

16533466403 is a deficient number, since it is larger than the sum of its proper divisors (3902725).

16533466403 is an equidigital number, since it uses as much as digits as its factorization.

16533466403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902724.

The product of its (nonzero) digits is 466560, while the sum is 41.

Adding to 16533466403 its reverse (30466433561), we get a palindrome (46999899964).

The spelling of 16533466403 in words is "sixteen billion, five hundred thirty-three million, four hundred sixty-six thousand, four hundred three".