188306016216613 has 2 divisors, whose sum is σ = 188306016216614. Its totient is φ = 188306016216612.

The previous prime is 188306016216587. The next prime is 188306016216631. The reversal of 188306016216613 is 316612610603881.

Together with next prime (188306016216631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161644728025764 + 26661288190849 = 12713958^2 + 5163457^2 .

It is a cyclic number.

It is not a de Polignac number, because 188306016216613 - 2⁵ = 188306016216581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188306016216673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94153008108306 + 94153008108307.

It is an arithmetic number, because the mean of its divisors is an integer number (94153008108307).

Almost surely, 2^{188306016216613} is an apocalyptic number.

It is an amenable number.

188306016216613 is a deficient number, since it is larger than the sum of its proper divisors (1).

188306016216613 is an equidigital number, since it uses as much as digits as its factorization.

188306016216613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 188306016216613 in words is "one hundred eighty-eight trillion, three hundred six billion, sixteen million, two hundred sixteen thousand, six hundred thirteen".