216608013518131 has 2 divisors, whose sum is σ = 216608013518132. Its totient is φ = 216608013518130.

The previous prime is 216608013518107. The next prime is 216608013518173. The reversal of 216608013518131 is 131815310806612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216608013518131 - 2¹⁵ = 216608013485363 is a prime.

It is a super-2 number, since 2×216608013518131² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (216608010518131) 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, 108304006759065 + 108304006759066.

It is an arithmetic number, because the mean of its divisors is an integer number (108304006759066).

Almost surely, 2^{216608013518131} is an apocalyptic number.

216608013518131 is a deficient number, since it is larger than the sum of its proper divisors (1).

216608013518131 is an equidigital number, since it uses as much as digits as its factorization.

216608013518131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 216608013518131 in words is "two hundred sixteen trillion, six hundred eight billion, thirteen million, five hundred eighteen thousand, one hundred thirty-one".