165154555272 has 48 divisors (see below), whose sum is σ = 480296414160. Its totient is φ = 47187015456.

The previous prime is 165154555271. The next prime is 165154555303. The reversal of 165154555272 is 272555451561.

It is a happy number.

165154555272 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (165154555271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70217598 + ... + 70219949.

It is an arithmetic number, because the mean of its divisors is an integer number (10006175295).

Almost surely, 2^165154555272 is an apocalyptic number.

165154555272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165154555272 is an abundant number, since it is smaller than the sum of its proper divisors (315141858888).

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

165154555272 is a wasteful number, since it uses less digits than its factorization.

165154555272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140437570 (or 140437559 counting only the distinct ones).

The product of its digits is 2100000, while the sum is 48.

The spelling of 165154555272 in words is "one hundred sixty-five billion, one hundred fifty-four million, five hundred fifty-five thousand, two hundred seventy-two".