165045525303640 has 64 divisors (see below), whose sum is σ = 378943923849120. Its totient is φ = 64677235200000.

The previous prime is 165045525303511. The next prime is 165045525303647. The reversal of 165045525303640 is 46303525540561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165045525303647) 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 15 ways as a sum of consecutive naturals, for example, 134131801 + ... + 135356680.

Almost surely, 2^{165045525303640} is an apocalyptic number.

165045525303640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165045525303640 is an abundant number, since it is smaller than the sum of its proper divisors (213898398545480).

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

165045525303640 is a wasteful number, since it uses less digits than its factorization.

165045525303640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269488804 (or 269488800 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 49.

The spelling of 165045525303640 in words is "one hundred sixty-five trillion, forty-five billion, five hundred twenty-five million, three hundred three thousand, six hundred forty".