165412434243366 has 32 divisors (see below), whose sum is σ = 369838298805120. Its totient is φ = 54799211341512.

The previous prime is 165412434243361. The next prime is 165412434243389. The reversal of 165412434243366 is 663342434214561.

165412434243366 is a `hidden beast` number, since 1 + 6 + 5 + 4 + 1 + 2 + 4 + 34 + 243 + 366 = 666.

165412434243366 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165412434243366² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165412434243361) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9396289440 + ... + 9396307043.

It is an arithmetic number, because the mean of its divisors is an integer number (11557446837660).

Almost surely, 2^{165412434243366} is an apocalyptic number.

165412434243366 is an abundant number, since it is smaller than the sum of its proper divisors (204425864561754).

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

165412434243366 is a wasteful number, since it uses less digits than its factorization.

165412434243366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18792596657 (or 18792596651 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 54.

The spelling of 165412434243366 in words is "one hundred sixty-five trillion, four hundred twelve billion, four hundred thirty-four million, two hundred forty-three thousand, three hundred sixty-six".