165984339461069 has 2 divisors, whose sum is σ = 165984339461070. Its totient is φ = 165984339461068.

The previous prime is 165984339460997. The next prime is 165984339461167. The reversal of 165984339461069 is 960164933489561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160096131468100 + 5888207992969 = 12652910^2 + 2426563^2 .

It is a cyclic number.

It is not a de Polignac number, because 165984339461069 - 2¹² = 165984339456973 is a prime.

It is a super-2 number, since 2×165984339461069² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165984339460987 and 165984339461005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165984339466069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82992169730534 + 82992169730535.

It is an arithmetic number, because the mean of its divisors is an integer number (82992169730535).

Almost surely, 2^{165984339461069} is an apocalyptic number.

It is an amenable number.

165984339461069 is a deficient number, since it is larger than the sum of its proper divisors (1).

165984339461069 is an equidigital number, since it uses as much as digits as its factorization.

165984339461069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 906992640, while the sum is 74.

The spelling of 165984339461069 in words is "one hundred sixty-five trillion, nine hundred eighty-four billion, three hundred thirty-nine million, four hundred sixty-one thousand, sixty-nine".