66656065126 has 64 divisors (see below), whose sum is σ = 124701534720. Its totient is φ = 26084816640.

The previous prime is 66656065121. The next prime is 66656065127. The reversal of 66656065126 is 62156065666.

It is a self number, because there is not a number n which added to its sum of digits gives 66656065126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66656065121) 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 31 ways as a sum of consecutive naturals, for example, 868380 + ... + 942016.

It is an arithmetic number, because the mean of its divisors is an integer number (1948461480).

Almost surely, 2^66656065126 is an apocalyptic number.

66656065126 is a deficient number, since it is larger than the sum of its proper divisors (58045469594).

66656065126 is a wasteful number, since it uses less digits than its factorization.

66656065126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73789.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 66656065126 in words is "sixty-six billion, six hundred fifty-six million, sixty-five thousand, one hundred twenty-six".