165050604535645 has 4 divisors (see below), whose sum is σ = 198060725442780. Its totient is φ = 132040483628512.

The previous prime is 165050604535633. The next prime is 165050604535669. The reversal of 165050604535645 is 546535406050561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117077831703001 + 47972772832644 = 10820251^2 + 6926238^2 .

It is a cyclic number.

It is not a de Polignac number, because 165050604535645 - 2⁷ = 165050604535517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16505060453560 + ... + 16505060453569.

It is an arithmetic number, because the mean of its divisors is an integer number (49515181360695).

Almost surely, 2^{165050604535645} is an apocalyptic number.

It is an amenable number.

165050604535645 is a deficient number, since it is larger than the sum of its proper divisors (33010120907135).

165050604535645 is an equidigital number, since it uses as much as digits as its factorization.

165050604535645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33010120907134.

The product of its (nonzero) digits is 32400000, while the sum is 55.

The spelling of 165050604535645 in words is "one hundred sixty-five trillion, fifty billion, six hundred four million, five hundred thirty-five thousand, six hundred forty-five".