66156268676 has 24 divisors (see below), whose sum is σ = 120078443520. Its totient is φ = 31854099872.

The previous prime is 66156268669. The next prime is 66156268679. The reversal of 66156268676 is 67686265166.

It is not an unprimeable number, because it can be changed into a prime (66156268679) 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, 700106 + ... + 788961.

It is an arithmetic number, because the mean of its divisors is an integer number (5003268480).

Almost surely, 2^66156268676 is an apocalyptic number.

It is an amenable number.

66156268676 is a deficient number, since it is larger than the sum of its proper divisors (53922174844).

66156268676 is a wasteful number, since it uses less digits than its factorization.

66156268676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489483 (or 1489481 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 59.

The spelling of 66156268676 in words is "sixty-six billion, one hundred fifty-six million, two hundred sixty-eight thousand, six hundred seventy-six".