16726225217 has 64 divisors (see below), whose sum is σ = 20760768000. Its totient is φ = 13302558720.

The previous prime is 16726225199. The next prime is 16726225261. The reversal of 16726225217 is 71252262761.

It is a cyclic number.

It is not a de Polignac number, because 16726225217 - 2¹² = 16726221121 is a prime.

It is a super-2 number, since 2×16726225217² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16726225717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30916967 + ... + 30917507.

It is an arithmetic number, because the mean of its divisors is an integer number (324387000).

Almost surely, 2^16726225217 is an apocalyptic number.

16726225217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16726225217 is a deficient number, since it is larger than the sum of its proper divisors (4034542783).

16726225217 is a wasteful number, since it uses less digits than its factorization.

16726225217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its digits is 141120, while the sum is 41.

Adding to 16726225217 its reverse (71252262761), we get a palindrome (87978487978).

The spelling of 16726225217 in words is "sixteen billion, seven hundred twenty-six million, two hundred twenty-five thousand, two hundred seventeen".