165050813827 has 2 divisors, whose sum is σ = 165050813828. Its totient is φ = 165050813826.

The previous prime is 165050813747. The next prime is 165050813849. The reversal of 165050813827 is 728318050561.

It is a strong prime.

It is an emirp because it is prime and its reverse (728318050561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165050813827 - 2¹⁹ = 165050289539 is a prime.

It is a super-2 number, since 2×165050813827² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (165050813927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82525406913 + 82525406914.

It is an arithmetic number, because the mean of its divisors is an integer number (82525406914).

Almost surely, 2^165050813827 is an apocalyptic number.

165050813827 is a deficient number, since it is larger than the sum of its proper divisors (1).

165050813827 is an equidigital number, since it uses as much as digits as its factorization.

165050813827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 165050813827 in words is "one hundred sixty-five billion, fifty million, eight hundred thirteen thousand, eight hundred twenty-seven".