165150110516550 has 48 divisors (see below), whose sum is σ = 418286577802752. Its totient is φ = 43103007565600.

The previous prime is 165150110516507. The next prime is 165150110516557. The reversal of 165150110516550 is 55615011051561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165150110516557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11712766746 + ... + 11712780845.

It is an arithmetic number, because the mean of its divisors is an integer number (8714303704224).

Almost surely, 2^{165150110516550} is an apocalyptic number.

165150110516550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165150110516550 is an abundant number, since it is smaller than the sum of its proper divisors (253136467286202).

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

165150110516550 is a wasteful number, since it uses less digits than its factorization.

165150110516550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23425547653 (or 23425547648 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 42.

The spelling of 165150110516550 in words is "one hundred sixty-five trillion, one hundred fifty billion, one hundred ten million, five hundred sixteen thousand, five hundred fifty".