30664321666 has 12 divisors (see below), whose sum is σ = 50558117526. Its totient is φ = 13938327920.

The previous prime is 30664321661. The next prime is 30664321679. The reversal of 30664321666 is 66612346603.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24878437441 + 5785884225 = 157729^2 + 76065^2 .

It is not an unprimeable number, because it can be changed into a prime (30664321661) 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 5 ways as a sum of consecutive naturals, for example, 63355795 + ... + 63356278.

Almost surely, 2^30664321666 is an apocalyptic number.

30664321666 is a deficient number, since it is larger than the sum of its proper divisors (19893795860).

30664321666 is a wasteful number, since it uses less digits than its factorization.

30664321666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126712097 (or 126712086 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 30664321666 in words is "thirty billion, six hundred sixty-four million, three hundred twenty-one thousand, six hundred sixty-six".