165617206207 has 2 divisors, whose sum is σ = 165617206208. Its totient is φ = 165617206206.

The previous prime is 165617206193. The next prime is 165617206243. The reversal of 165617206207 is 702602716561.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165617206207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165617216207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82808603103 + 82808603104.

It is an arithmetic number, because the mean of its divisors is an integer number (82808603104).

Almost surely, 2^165617206207 is an apocalyptic number.

165617206207 is a deficient number, since it is larger than the sum of its proper divisors (1).

165617206207 is an equidigital number, since it uses as much as digits as its factorization.

165617206207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 165617206207 in words is "one hundred sixty-five billion, six hundred seventeen million, two hundred six thousand, two hundred seven".