66081136358730 has 64 divisors (see below), whose sum is σ = 161339384746368. Its totient is φ = 17318392519680.

The previous prime is 66081136358723. The next prime is 66081136358761. The reversal of 66081136358730 is 3785363118066.

66081136358730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66081136358730² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 53075064 + ... + 54305843.

It is an arithmetic number, because the mean of its divisors is an integer number (2520927886662).

Almost surely, 2^{66081136358730} is an apocalyptic number.

66081136358730 is an abundant number, since it is smaller than the sum of its proper divisors (95258248387638).

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

66081136358730 is a wasteful number, since it uses less digits than its factorization.

66081136358730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107381271.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 66081136358730 in words is "sixty-six trillion, eighty-one billion, one hundred thirty-six million, three hundred fifty-eight thousand, seven hundred thirty".