16789638097 has 4 divisors (see below), whose sum is σ = 17673303280. Its totient is φ = 15905972916.

The previous prime is 16789638043. The next prime is 16789638133. The reversal of 16789638097 is 79083698761.

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 a de Polignac number, because none of the positive numbers 2^k-16789638097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16789638007) 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, 441832563 + ... + 441832600.

It is an arithmetic number, because the mean of its divisors is an integer number (4418325820).

Almost surely, 2^16789638097 is an apocalyptic number.

It is an amenable number.

16789638097 is a deficient number, since it is larger than the sum of its proper divisors (883665183).

16789638097 is an equidigital number, since it uses as much as digits as its factorization.

16789638097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883665182.

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 16789638097 in words is "sixteen billion, seven hundred eighty-nine million, six hundred thirty-eight thousand, ninety-seven".