165755754119 has 2 divisors, whose sum is σ = 165755754120. Its totient is φ = 165755754118.

The previous prime is 165755754089. The next prime is 165755754191. The reversal of 165755754119 is 911457557561.

Together with next prime (165755754191) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165755754119 - 2¹² = 165755750023 is a prime.

It is a super-2 number, since 2×165755754119² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165755757119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82877877059 + 82877877060.

It is an arithmetic number, because the mean of its divisors is an integer number (82877877060).

Almost surely, 2^165755754119 is an apocalyptic number.

165755754119 is a deficient number, since it is larger than the sum of its proper divisors (1).

165755754119 is an equidigital number, since it uses as much as digits as its factorization.

165755754119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6615000, while the sum is 56.

The spelling of 165755754119 in words is "one hundred sixty-five billion, seven hundred fifty-five million, seven hundred fifty-four thousand, one hundred nineteen".