16675221207 has 8 divisors (see below), whose sum is σ = 22234478080. Its totient is φ = 11116389240.

The previous prime is 16675221203. The next prime is 16675221247. The reversal of 16675221207 is 70212257661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16675221207 - 2² = 16675221203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16675221203) 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 7 ways as a sum of consecutive naturals, for example, 732 + ... + 182622.

It is an arithmetic number, because the mean of its divisors is an integer number (2779309760).

Almost surely, 2^16675221207 is an apocalyptic number.

16675221207 is a deficient number, since it is larger than the sum of its proper divisors (5559256873).

16675221207 is a wasteful number, since it uses less digits than its factorization.

16675221207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212453.

The product of its (nonzero) digits is 70560, while the sum is 39.

Adding to 16675221207 its reverse (70212257661), we get a palindrome (86887478868).

The spelling of 16675221207 in words is "sixteen billion, six hundred seventy-five million, two hundred twenty-one thousand, two hundred seven".