16656532433 has 4 divisors (see below), whose sum is σ = 16658703600. Its totient is φ = 16654361268.

The previous prime is 16656532411. The next prime is 16656532447. The reversal of 16656532433 is 33423565661.

16656532433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33423565661 = 23 ⋅1453198507.

It is a cyclic number.

It is not a de Polignac number, because 16656532433 - 2¹² = 16656528337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16656532033) 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 3 ways as a sum of consecutive naturals, for example, 1074035 + ... + 1089432.

It is an arithmetic number, because the mean of its divisors is an integer number (4164675900).

Almost surely, 2^16656532433 is an apocalyptic number.

It is an amenable number.

16656532433 is a deficient number, since it is larger than the sum of its proper divisors (2171167).

16656532433 is an equidigital number, since it uses as much as digits as its factorization.

16656532433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171166.

The product of its digits is 1166400, while the sum is 44.

The spelling of 16656532433 in words is "sixteen billion, six hundred fifty-six million, five hundred thirty-two thousand, four hundred thirty-three".