16217280913 has 2 divisors, whose sum is σ = 16217280914. Its totient is φ = 16217280912.

The previous prime is 16217280899. The next prime is 16217280929. The reversal of 16217280913 is 31908271261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15463668609 + 753612304 = 124353^2 + 27452^2 .

It is a cyclic number.

It is not a de Polignac number, because 16217280913 - 2¹⁷ = 16217149841 is a prime.

It is a super-2 number, since 2×16217280913² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16217280973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8108640456 + 8108640457.

It is an arithmetic number, because the mean of its divisors is an integer number (8108640457).

Almost surely, 2^16217280913 is an apocalyptic number.

It is an amenable number.

16217280913 is a deficient number, since it is larger than the sum of its proper divisors (1).

16217280913 is an equidigital number, since it uses as much as digits as its factorization.

16217280913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 16217280913 in words is "sixteen billion, two hundred seventeen million, two hundred eighty thousand, nine hundred thirteen".