162216623291 has 2 divisors, whose sum is σ = 162216623292. Its totient is φ = 162216623290.

The previous prime is 162216623263. The next prime is 162216623293. The reversal of 162216623291 is 192326612261.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162216623291 is a prime.

Together with 162216623293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (162216623293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81108311645 + 81108311646.

It is an arithmetic number, because the mean of its divisors is an integer number (81108311646).

Almost surely, 2^162216623291 is an apocalyptic number.

162216623291 is a deficient number, since it is larger than the sum of its proper divisors (1).

162216623291 is an equidigital number, since it uses as much as digits as its factorization.

162216623291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The spelling of 162216623291 in words is "one hundred sixty-two billion, two hundred sixteen million, six hundred twenty-three thousand, two hundred ninety-one".