165626408027 has 4 divisors (see below), whose sum is σ = 165627388896. Its totient is φ = 165625427160.

The previous prime is 165626407993. The next prime is 165626408029. The reversal of 165626408027 is 720804626561.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 165626408027 - 2¹⁰ = 165626407003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165626408029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165299 + ... + 598812.

It is an arithmetic number, because the mean of its divisors is an integer number (41406847224).

Almost surely, 2^165626408027 is an apocalyptic number.

165626408027 is a deficient number, since it is larger than the sum of its proper divisors (980869).

165626408027 is an equidigital number, since it uses as much as digits as its factorization.

165626408027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980868.

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 165626408027 in words is "one hundred sixty-five billion, six hundred twenty-six million, four hundred eight thousand, twenty-seven".