163606514207951 has 2 divisors, whose sum is σ = 163606514207952. Its totient is φ = 163606514207950.

The previous prime is 163606514207947. The next prime is 163606514208023. The reversal of 163606514207951 is 159702415606361.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (159702415606361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163606514207951 - 2² = 163606514207947 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163606514207911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81803257103975 + 81803257103976.

It is an arithmetic number, because the mean of its divisors is an integer number (81803257103976).

Almost surely, 2^{163606514207951} is an apocalyptic number.

163606514207951 is a deficient number, since it is larger than the sum of its proper divisors (1).

163606514207951 is an equidigital number, since it uses as much as digits as its factorization.

163606514207951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 163606514207951 in words is "one hundred sixty-three trillion, six hundred six billion, five hundred fourteen million, two hundred seven thousand, nine hundred fifty-one".