66547371011 has 8 divisors (see below), whose sum is σ = 75753529344. Its totient is φ = 57867278920.

The previous prime is 66547371001. The next prime is 66547371013. The reversal of 66547371011 is 11017374566.

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

It is not a de Polignac number, because 66547371011 - 2⁶ = 66547370947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66547371011.

It is not an unprimeable number, because it can be changed into a prime (66547371013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131516291 + ... + 131516796.

It is an arithmetic number, because the mean of its divisors is an integer number (9469191168).

Almost surely, 2^66547371011 is an apocalyptic number.

66547371011 is a deficient number, since it is larger than the sum of its proper divisors (9206158333).

66547371011 is a wasteful number, since it uses less digits than its factorization.

66547371011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263033121.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 66547371011 in words is "sixty-six billion, five hundred forty-seven million, three hundred seventy-one thousand, eleven".