165456076813 has 2 divisors, whose sum is σ = 165456076814. Its totient is φ = 165456076812.

The previous prime is 165456076789. The next prime is 165456076861. The reversal of 165456076813 is 318670654561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153925182889 + 11530893924 = 392333^2 + 107382^2 .

It is a cyclic number.

It is not a de Polignac number, because 165456076813 - 2⁹ = 165456076301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165456076913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82728038406 + 82728038407.

It is an arithmetic number, because the mean of its divisors is an integer number (82728038407).

Almost surely, 2^165456076813 is an apocalyptic number.

It is an amenable number.

165456076813 is a deficient number, since it is larger than the sum of its proper divisors (1).

165456076813 is an equidigital number, since it uses as much as digits as its factorization.

165456076813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 165456076813 in words is "one hundred sixty-five billion, four hundred fifty-six million, seventy-six thousand, eight hundred thirteen".