16905222007 has 8 divisors (see below), whose sum is σ = 17349182240. Its totient is φ = 16466643360.

The previous prime is 16905222001. The next prime is 16905222017. The reversal of 16905222007 is 70022250961.

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

It is a cyclic number.

It is not a de Polignac number, because 16905222007 - 2¹¹ = 16905219959 is a prime.

It is a super-2 number, since 2×16905222007² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16905222001) 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, 1339032 + ... + 1351597.

It is an arithmetic number, because the mean of its divisors is an integer number (2168647780).

Almost surely, 2^16905222007 is an apocalyptic number.

16905222007 is a deficient number, since it is larger than the sum of its proper divisors (443960233).

16905222007 is a wasteful number, since it uses less digits than its factorization.

16905222007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690793.

The product of its (nonzero) digits is 15120, while the sum is 34.

Adding to 16905222007 its reverse (70022250961), we get a palindrome (86927472968).

The spelling of 16905222007 in words is "sixteen billion, nine hundred five million, two hundred twenty-two thousand, seven".