165353355465420 has 48 divisors (see below), whose sum is σ = 462992920518240. Its totient is φ = 44093892389376.

The previous prime is 165353355465383. The next prime is 165353355465421. The reversal of 165353355465420 is 24564553353561.

It is not an unprimeable number, because it can be changed into a prime (165353355465421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2495487 + ... + 18355766.

It is an arithmetic number, because the mean of its divisors is an integer number (9645685844130).

Almost surely, 2^{165353355465420} is an apocalyptic number.

165353355465420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165353355465420 is an abundant number, since it is smaller than the sum of its proper divisors (297639565052820).

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

165353355465420 is a wasteful number, since it uses less digits than its factorization.

165353355465420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20983434 (or 20983432 counting only the distinct ones).

The product of its (nonzero) digits is 97200000, while the sum is 57.

The spelling of 165353355465420 in words is "one hundred sixty-five trillion, three hundred fifty-three billion, three hundred fifty-five million, four hundred sixty-five thousand, four hundred twenty".