165495402433 has 2 divisors, whose sum is σ = 165495402434. Its totient is φ = 165495402432.

The previous prime is 165495402421. The next prime is 165495402437. The reversal of 165495402433 is 334204594561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120595063824 + 44900338609 = 347268^2 + 211897^2 .

It is an emirp because it is prime and its reverse (334204594561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165495402433 - 2⁹ = 165495401921 is a prime.

It is not a weakly prime, because it can be changed into another prime (165495402437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82747701216 + 82747701217.

It is an arithmetic number, because the mean of its divisors is an integer number (82747701217).

Almost surely, 2^165495402433 is an apocalyptic number.

It is an amenable number.

165495402433 is a deficient number, since it is larger than the sum of its proper divisors (1).

165495402433 is an equidigital number, since it uses as much as digits as its factorization.

165495402433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 46.

Adding to 165495402433 its reverse (334204594561), we get a palindrome (499699996994).

The spelling of 165495402433 in words is "one hundred sixty-five billion, four hundred ninety-five million, four hundred two thousand, four hundred thirty-three".