66054544611 has 8 divisors (see below), whose sum is σ = 96079337664. Its totient is φ = 40033057320.

The previous prime is 66054544603. The next prime is 66054544649. The reversal of 66054544611 is 11644545066.

It is a happy number.

66054544611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66054544611 - 2³ = 66054544603 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66054544691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000826401 + ... + 1000826466.

It is an arithmetic number, because the mean of its divisors is an integer number (12009917208).

Almost surely, 2^66054544611 is an apocalyptic number.

66054544611 is a deficient number, since it is larger than the sum of its proper divisors (30024793053).

66054544611 is a wasteful number, since it uses less digits than its factorization.

66054544611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001652881.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 66054544611 in words is "sixty-six billion, fifty-four million, five hundred forty-four thousand, six hundred eleven".