165445533857000 has 128 divisors (see below), whose sum is σ = 390991306867200. Its totient is φ = 65520602496000.

The previous prime is 165445533856973. The next prime is 165445533857017. The reversal of 165445533857000 is 758335544561.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 452090096 + ... + 452455904.

It is an arithmetic number, because the mean of its divisors is an integer number (3054619584900).

Almost surely, 2^{165445533857000} is an apocalyptic number.

165445533857000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165445533857000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195495653433600).

165445533857000 is an abundant number, since it is smaller than the sum of its proper divisors (225545773010200).

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

165445533857000 is a wasteful number, since it uses less digits than its factorization.

165445533857000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370324 (or 370310 counting only the distinct ones).

The product of its (nonzero) digits is 30240000, while the sum is 56.

The spelling of 165445533857000 in words is "one hundred sixty-five trillion, four hundred forty-five billion, five hundred thirty-three million, eight hundred fifty-seven thousand".