66149335340595 has 320 divisors, whose sum is σ = 130418723635200. Its totient is φ = 31879916651520.

The previous prime is 66149335340593. The next prime is 66149335340653. The reversal of 66149335340595 is 59504353394166.

66149335340595 is a `hidden beast` number, since 6 + 6 + 1 + 4 + 9 + 3 + 3 + 5 + 34 + 0 + 595 = 666.

66149335340595 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 66149335340595 - 2¹ = 66149335340593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66149335340591) 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 319 ways as a sum of consecutive naturals, for example, 42430618426 + ... + 42430619984.

It is an arithmetic number, because the mean of its divisors is an integer number (407558511360).

Almost surely, 2^{66149335340595} is an apocalyptic number.

66149335340595 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66149335340595 is a deficient number, since it is larger than the sum of its proper divisors (64269388294605).

66149335340595 is a wasteful number, since it uses less digits than its factorization.

66149335340595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392 (or 2383 counting only the distinct ones).

The product of its (nonzero) digits is 157464000, while the sum is 63.

The spelling of 66149335340595 in words is "sixty-six trillion, one hundred forty-nine billion, three hundred thirty-five million, three hundred forty thousand, five hundred ninety-five".