165045434521136 has 20 divisors (see below), whose sum is σ = 344373647030112. Its totient is φ = 76174815932736.

The previous prime is 165045434521133. The next prime is 165045434521223. The reversal of 165045434521136 is 631125434540561.

It is not an unprimeable number, because it can be changed into a prime (165045434521133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396743832776 + ... + 396743833191.

Almost surely, 2^{165045434521136} is an apocalyptic number.

165045434521136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

165045434521136 is an abundant number, since it is smaller than the sum of its proper divisors (179328212508976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165045434521136 is a wasteful number, since it uses less digits than its factorization.

165045434521136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793487665988 (or 793487665982 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 165045434521136 in words is "one hundred sixty-five trillion, forty-five billion, four hundred thirty-four million, five hundred twenty-one thousand, one hundred thirty-six".