16768835809 has 4 divisors (see below), whose sum is σ = 18293275440. Its totient is φ = 15244396180.

The previous prime is 16768835803. The next prime is 16768835849. The reversal of 16768835809 is 90853886761.

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 16768835809 - 2⁹ = 16768835297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16768835803) 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, 762219799 + ... + 762219820.

It is an arithmetic number, because the mean of its divisors is an integer number (4573318860).

Almost surely, 2^16768835809 is an apocalyptic number.

It is an amenable number.

16768835809 is a deficient number, since it is larger than the sum of its proper divisors (1524439631).

16768835809 is a wasteful number, since it uses less digits than its factorization.

16768835809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524439630.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 16768835809 in words is "sixteen billion, seven hundred sixty-eight million, eight hundred thirty-five thousand, eight hundred nine".