165773005493 has 2 divisors, whose sum is σ = 165773005494. Its totient is φ = 165773005492.

The previous prime is 165773005483. The next prime is 165773005523. The reversal of 165773005493 is 394500377561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91441526449 + 74331479044 = 302393^2 + 272638^2 .

It is a cyclic number.

It is not a de Polignac number, because 165773005493 - 2²² = 165768811189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165773005483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82886502746 + 82886502747.

It is an arithmetic number, because the mean of its divisors is an integer number (82886502747).

Almost surely, 2^165773005493 is an apocalyptic number.

It is an amenable number.

165773005493 is a deficient number, since it is larger than the sum of its proper divisors (1).

165773005493 is an equidigital number, since it uses as much as digits as its factorization.

165773005493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 50.

The spelling of 165773005493 in words is "one hundred sixty-five billion, seven hundred seventy-three million, five thousand, four hundred ninety-three".