73033665613 has 16 divisors (see below), whose sum is σ = 75084226560. Its totient is φ = 71004384496.

The previous prime is 73033665589. The next prime is 73033665631. The reversal of 73033665613 is 31656633037.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 73033665613 - 2⁵ = 73033665581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73033665613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73033665713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19958178 + ... + 19961836.

It is an arithmetic number, because the mean of its divisors is an integer number (4692764160).

Almost surely, 2^73033665613 is an apocalyptic number.

It is an amenable number.

73033665613 is a deficient number, since it is larger than the sum of its proper divisors (2050560947).

73033665613 is a wasteful number, since it uses less digits than its factorization.

73033665613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416.

The product of its (nonzero) digits is 612360, while the sum is 43.

The spelling of 73033665613 in words is "seventy-three billion, thirty-three million, six hundred sixty-five thousand, six hundred thirteen".