165222454361 has 2 divisors, whose sum is σ = 165222454362. Its totient is φ = 165222454360.

The previous prime is 165222454339. The next prime is 165222454373. The reversal of 165222454361 is 163454222561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104875584025 + 60346870336 = 323845^2 + 245656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165222454361 is a prime.

It is not a weakly prime, because it can be changed into another prime (165222454381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82611227180 + 82611227181.

It is an arithmetic number, because the mean of its divisors is an integer number (82611227181).

Almost surely, 2^165222454361 is an apocalyptic number.

It is an amenable number.

165222454361 is a deficient number, since it is larger than the sum of its proper divisors (1).

165222454361 is an equidigital number, since it uses as much as digits as its factorization.

165222454361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 41.

The spelling of 165222454361 in words is "one hundred sixty-five billion, two hundred twenty-two million, four hundred fifty-four thousand, three hundred sixty-one".