16788680033 has 4 divisors (see below), whose sum is σ = 17242428180. Its totient is φ = 16334931888.

The previous prime is 16788680009. The next prime is 16788680039. The reversal of 16788680033 is 33008688761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33008688761 = 2251 ⋅14664011.

It can be written as a sum of positive squares in 2 ways, for example, as 14846691409 + 1941988624 = 121847^2 + 44068^2 .

It is a cyclic number.

It is not a de Polignac number, because 16788680033 - 2¹⁰ = 16788679009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16788680039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226874018 + ... + 226874091.

It is an arithmetic number, because the mean of its divisors is an integer number (4310607045).

Almost surely, 2^16788680033 is an apocalyptic number.

It is an amenable number.

16788680033 is a deficient number, since it is larger than the sum of its proper divisors (453748147).

16788680033 is an equidigital number, since it uses as much as digits as its factorization.

16788680033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453748146.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 16788680033 in words is "sixteen billion, seven hundred eighty-eight million, six hundred eighty thousand, thirty-three".