165028348361 has 2 divisors, whose sum is σ = 165028348362. Its totient is φ = 165028348360.

The previous prime is 165028348349. The next prime is 165028348369. The reversal of 165028348361 is 163843820561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157782933961 + 7245414400 = 397219^2 + 85120^2 .

It is an emirp because it is prime and its reverse (163843820561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165028348361 - 2¹⁸ = 165028086217 is a prime.

It is not a weakly prime, because it can be changed into another prime (165028348369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82514174180 + 82514174181.

It is an arithmetic number, because the mean of its divisors is an integer number (82514174181).

Almost surely, 2^165028348361 is an apocalyptic number.

It is an amenable number.

165028348361 is a deficient number, since it is larger than the sum of its proper divisors (1).

165028348361 is an equidigital number, since it uses as much as digits as its factorization.

165028348361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 165028348361 in words is "one hundred sixty-five billion, twenty-eight million, three hundred forty-eight thousand, three hundred sixty-one".