73567679666 has 12 divisors (see below), whose sum is σ = 119493066042. Its totient is φ = 33954313536.

The previous prime is 73567679659. The next prime is 73567679693. The reversal of 73567679666 is 66697676537.

It can be written as a sum of positive squares in 3 ways, for example, as 12472199041 + 61095480625 = 111679^2 + 247175^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73567679596 and 73567679605.

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 5 ways as a sum of consecutive naturals, for example, 108827591 + ... + 108828266.

Almost surely, 2^73567679666 is an apocalyptic number.

73567679666 is a deficient number, since it is larger than the sum of its proper divisors (45925386376).

73567679666 is a wasteful number, since it uses less digits than its factorization.

73567679666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217655885 (or 217655872 counting only the distinct ones).

The product of its digits is 360067680, while the sum is 68.

The spelling of 73567679666 in words is "seventy-three billion, five hundred sixty-seven million, six hundred seventy-nine thousand, six hundred sixty-six".