66366344366366 has 12 divisors (see below), whose sum is σ = 109422195877176. Its totient is φ = 30166520166420.

The previous prime is 66366344366341. The next prime is 66366344366381.

It is a happy number.

66366344366366 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66366344366296 and 66366344366305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137120545970 + ... + 137120546453.

It is an arithmetic number, because the mean of its divisors is an integer number (9118516323098).

Almost surely, 2^{66366344366366} is an apocalyptic number.

66366344366366 is a deficient number, since it is larger than the sum of its proper divisors (43055851510810).

66366344366366 is a wasteful number, since it uses less digits than its factorization.

66366344366366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274241092447 (or 274241092436 counting only the distinct ones).

The product of its digits is 2176782336, while the sum is 68.

The spelling of 66366344366366 in words is "sixty-six trillion, three hundred sixty-six billion, three hundred forty-four million, three hundred sixty-six thousand, three hundred sixty-six".