165250543560 has 64 divisors (see below), whose sum is σ = 496525265280. Its totient is φ = 43998044160.

The previous prime is 165250543531. The next prime is 165250543567. The reversal of 165250543560 is 65345052561.

It is not an unprimeable number, because it can be changed into a prime (165250543567) 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, 997252 + ... + 1151091.

It is an arithmetic number, because the mean of its divisors is an integer number (7758207270).

Almost surely, 2^165250543560 is an apocalyptic number.

165250543560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165250543560 is an abundant number, since it is smaller than the sum of its proper divisors (331274721720).

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

165250543560 is a wasteful number, since it uses less digits than its factorization.

165250543560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148998 (or 2148994 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 165250543560 in words is "one hundred sixty-five billion, two hundred fifty million, five hundred forty-three thousand, five hundred sixty".