66100611511 has 8 divisors (see below), whose sum is σ = 72390343824. Its totient is φ = 59857643520.

The previous prime is 66100611509. The next prime is 66100611527. The reversal of 66100611511 is 11511600166.

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

It is a cyclic number.

It is not a de Polignac number, because 66100611511 - 2¹ = 66100611509 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 66100611511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66100612511) 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 7 ways as a sum of consecutive naturals, for example, 11688120 + ... + 11693773.

It is an arithmetic number, because the mean of its divisors is an integer number (9048792978).

Almost surely, 2^66100611511 is an apocalyptic number.

66100611511 is a deficient number, since it is larger than the sum of its proper divisors (6289732313).

66100611511 is a wasteful number, since it uses less digits than its factorization.

66100611511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23382161.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 66100611511 in words is "sixty-six billion, one hundred million, six hundred eleven thousand, five hundred eleven".