326656360066 has 4 divisors (see below), whose sum is σ = 489984540102. Its totient is φ = 163328180032.

The previous prime is 326656360061. The next prime is 326656360081. The reversal of 326656360066 is 660063656623.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 185446503225 + 141209856841 = 430635^2 + 375779^2 .

It is not an unprimeable number, because it can be changed into a prime (326656360061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81664090015 + ... + 81664090018.

Almost surely, 2^326656360066 is an apocalyptic number.

326656360066 is a deficient number, since it is larger than the sum of its proper divisors (163328180036).

326656360066 is a wasteful number, since it uses less digits than its factorization.

326656360066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163328180035.

The product of its (nonzero) digits is 4199040, while the sum is 49.

The spelling of 326656360066 in words is "three hundred twenty-six billion, six hundred fifty-six million, three hundred sixty thousand, sixty-six".