165827568225247 has 2 divisors, whose sum is σ = 165827568225248. Its totient is φ = 165827568225246.

The previous prime is 165827568225233. The next prime is 165827568225313. The reversal of 165827568225247 is 742522865728561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165827568225247 - 2¹¹ = 165827568223199 is a prime.

It is a super-2 number, since 2×165827568225247² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165827568225047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82913784112623 + 82913784112624.

It is an arithmetic number, because the mean of its divisors is an integer number (82913784112624).

Almost surely, 2^{165827568225247} is an apocalyptic number.

165827568225247 is a deficient number, since it is larger than the sum of its proper divisors (1).

165827568225247 is an equidigital number, since it uses as much as digits as its factorization.

165827568225247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168000, while the sum is 70.

The spelling of 165827568225247 in words is "one hundred sixty-five trillion, eight hundred twenty-seven billion, five hundred sixty-eight million, two hundred twenty-five thousand, two hundred forty-seven".