162218839691 has 2 divisors, whose sum is σ = 162218839692. Its totient is φ = 162218839690.

The previous prime is 162218839663. The next prime is 162218839703. The reversal of 162218839691 is 196938812261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 162218839691 - 2¹⁰ = 162218838667 is a prime.

It is not a weakly prime, because it can be changed into another prime (162218839661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81109419845 + 81109419846.

It is an arithmetic number, because the mean of its divisors is an integer number (81109419846).

Almost surely, 2^162218839691 is an apocalyptic number.

162218839691 is a deficient number, since it is larger than the sum of its proper divisors (1).

162218839691 is an equidigital number, since it uses as much as digits as its factorization.

162218839691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 56.

The spelling of 162218839691 in words is "one hundred sixty-two billion, two hundred eighteen million, eight hundred thirty-nine thousand, six hundred ninety-one".