366643683842 has 6 divisors (see below), whose sum is σ = 549966810249. Its totient is φ = 183321413760.

The previous prime is 366643683839. The next prime is 366643683869. The reversal of 366643683842 is 248386346663.

It can be written as a sum of positive squares in 2 ways, for example, as 329190210001 + 37453473841 = 573751^2 + 193529^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=428161.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 642242 + ... + 1070402.

Almost surely, 2^366643683842 is an apocalyptic number.

366643683842 is a deficient number, since it is larger than the sum of its proper divisors (183323126407).

366643683842 is an frugal number, since it uses more digits than its factorization.

366643683842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856324 (or 428163 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 59.

The spelling of 366643683842 in words is "three hundred sixty-six billion, six hundred forty-three million, six hundred eighty-three thousand, eight hundred forty-two".