165453663071 has 2 divisors, whose sum is σ = 165453663072. Its totient is φ = 165453663070.

The previous prime is 165453663061. The next prime is 165453663107. The reversal of 165453663071 is 170366354561.

Together with next prime (165453663107) 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 165453663071 - 2¹⁰ = 165453662047 is a prime.

It is a super-2 number, since 2×165453663071² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165453663061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82726831535 + 82726831536.

It is an arithmetic number, because the mean of its divisors is an integer number (82726831536).

Almost surely, 2^165453663071 is an apocalyptic number.

165453663071 is a deficient number, since it is larger than the sum of its proper divisors (1).

165453663071 is an equidigital number, since it uses as much as digits as its factorization.

165453663071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 165453663071 in words is "one hundred sixty-five billion, four hundred fifty-three million, six hundred sixty-three thousand, seventy-one".