66755285107 has 8 divisors (see below), whose sum is σ = 78922504800. Its totient is φ = 55245753024.

The previous prime is 66755285063. The next prime is 66755285119. The reversal of 66755285107 is 70158255766.

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

It is not a de Polignac number, because 66755285107 - 2¹⁹ = 66754760819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66755285137) 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, 164421682 + ... + 164422087.

It is an arithmetic number, because the mean of its divisors is an integer number (9865313100).

Almost surely, 2^66755285107 is an apocalyptic number.

66755285107 is a deficient number, since it is larger than the sum of its proper divisors (12167219693).

66755285107 is a wasteful number, since it uses less digits than its factorization.

66755285107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328843805.

The product of its (nonzero) digits is 3528000, while the sum is 52.

The spelling of 66755285107 in words is "sixty-six billion, seven hundred fifty-five million, two hundred eighty-five thousand, one hundred seven".