165544767049 has 2 divisors, whose sum is σ = 165544767050. Its totient is φ = 165544767048.

The previous prime is 165544767023. The next prime is 165544767053. The reversal of 165544767049 is 940767445561.

165544767049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104403303225 + 61141463824 = 323115^2 + 247268^2 .

It is a cyclic number.

It is not a de Polignac number, because 165544767049 - 2¹³ = 165544758857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165544766984 and 165544767002.

It is not a weakly prime, because it can be changed into another prime (165544767019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82772383524 + 82772383525.

It is an arithmetic number, because the mean of its divisors is an integer number (82772383525).

Almost surely, 2^165544767049 is an apocalyptic number.

It is an amenable number.

165544767049 is a deficient number, since it is larger than the sum of its proper divisors (1).

165544767049 is an equidigital number, since it uses as much as digits as its factorization.

165544767049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 165544767049 in words is "one hundred sixty-five billion, five hundred forty-four million, seven hundred sixty-seven thousand, forty-nine".