16516642533 has 4 divisors (see below), whose sum is σ = 22022190048. Its totient is φ = 11011095020.

The previous prime is 16516642531. The next prime is 16516642561. The reversal of 16516642533 is 33524661561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16516642533 - 2¹ = 16516642531 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16516642531) by changing a digit.

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, 2752773753 + ... + 2752773758.

It is an arithmetic number, because the mean of its divisors is an integer number (5505547512).

Almost surely, 2^16516642533 is an apocalyptic number.

It is an amenable number.

16516642533 is a deficient number, since it is larger than the sum of its proper divisors (5505547515).

16516642533 is an equidigital number, since it uses as much as digits as its factorization.

16516642533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505547514.

The product of its digits is 388800, while the sum is 42.

The spelling of 16516642533 in words is "sixteen billion, five hundred sixteen million, six hundred forty-two thousand, five hundred thirty-three".