165055555055052 has 72 divisors (see below), whose sum is σ = 442673457067296. Its totient is φ = 51675806006784.

The previous prime is 165055555055051. The next prime is 165055555055057. The reversal of 165055555055052 is 250550555550561.

It is a self number, because there is not a number n which added to its sum of digits gives 165055555055052.

It is not an unprimeable number, because it can be changed into a prime (165055555055051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276599923 + ... + 277196010.

It is an arithmetic number, because the mean of its divisors is an integer number (6148242459268).

Almost surely, 2^{165055555055052} is an apocalyptic number.

165055555055052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165055555055052 is an abundant number, since it is smaller than the sum of its proper divisors (277617902012244).

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

165055555055052 is a wasteful number, since it uses less digits than its factorization.

165055555055052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553796447 (or 553796442 counting only the distinct ones).

The product of its (nonzero) digits is 23437500, while the sum is 54.

The spelling of 165055555055052 in words is "one hundred sixty-five trillion, fifty-five billion, five hundred fifty-five million, fifty-five thousand, fifty-two".