16617252017 has 2 divisors, whose sum is σ = 16617252018. Its totient is φ = 16617252016.

The previous prime is 16617252007. The next prime is 16617252049. The reversal of 16617252017 is 71025271661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15624750001 + 992502016 = 124999^2 + 31504^2 .

It is a cyclic number.

It is not a de Polignac number, because 16617252017 - 2²⁰ = 16616203441 is a prime.

It is a super-2 number, since 2×16617252017² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16617252007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8308626008 + 8308626009.

It is an arithmetic number, because the mean of its divisors is an integer number (8308626009).

Almost surely, 2^16617252017 is an apocalyptic number.

It is an amenable number.

16617252017 is a deficient number, since it is larger than the sum of its proper divisors (1).

16617252017 is an equidigital number, since it uses as much as digits as its factorization.

16617252017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 16617252017 in words is "sixteen billion, six hundred seventeen million, two hundred fifty-two thousand, seventeen".