165403045215 has 48 divisors (see below), whose sum is σ = 310967276256. Its totient is φ = 81000806400.

The previous prime is 165403045183. The next prime is 165403045229. The reversal of 165403045215 is 512540304561.

165403045215 is a `hidden beast` number, since 1 + 65 + 40 + 30 + 4 + 521 + 5 = 666.

165403045215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165403045215 - 2⁵ = 165403045183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165403045215.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2605381 + ... + 2668110.

It is an arithmetic number, because the mean of its divisors is an integer number (6478484922).

Almost surely, 2^165403045215 is an apocalyptic number.

165403045215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165403045215 is a deficient number, since it is larger than the sum of its proper divisors (145564231041).

165403045215 is a wasteful number, since it uses less digits than its factorization.

165403045215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5273560 (or 5273557 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 165403045215 its reverse (512540304561), we get a palindrome (677943349776).

The spelling of 165403045215 in words is "one hundred sixty-five billion, four hundred three million, forty-five thousand, two hundred fifteen".