16503066017 has 8 divisors (see below), whose sum is σ = 16655611392. Its totient is φ = 16351210000.

The previous prime is 16503065987. The next prime is 16503066023. The reversal of 16503066017 is 71066030561.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16503066017 is a prime.

It is a super-2 number, since 2×16503066017² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16503066817) 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 7 ways as a sum of consecutive naturals, for example, 124178 + ... + 220059.

It is an arithmetic number, because the mean of its divisors is an integer number (2081951424).

Almost surely, 2^16503066017 is an apocalyptic number.

It is an amenable number.

16503066017 is a deficient number, since it is larger than the sum of its proper divisors (152545375).

16503066017 is a wasteful number, since it uses less digits than its factorization.

16503066017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344679.

The product of its (nonzero) digits is 22680, while the sum is 35.

Adding to 16503066017 its reverse (71066030561), we get a palindrome (87569096578).

The spelling of 16503066017 in words is "sixteen billion, five hundred three million, sixty-six thousand, seventeen".