73133566613 has 4 divisors (see below), whose sum is σ = 73659707520. Its totient is φ = 72607425708.

The previous prime is 73133566603. The next prime is 73133566679. The reversal of 73133566613 is 31666533137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31666533137 = 6343 ⋅4992359.

It is a cyclic number.

It is not a de Polignac number, because 73133566613 - 2⁸ = 73133566357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73133566603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263070245 + ... + 263070522.

It is an arithmetic number, because the mean of its divisors is an integer number (18414926880).

Almost surely, 2^73133566613 is an apocalyptic number.

It is an amenable number.

73133566613 is a deficient number, since it is larger than the sum of its proper divisors (526140907).

73133566613 is a wasteful number, since it uses less digits than its factorization.

73133566613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526140906.

The product of its digits is 612360, while the sum is 44.

The spelling of 73133566613 in words is "seventy-three billion, one hundred thirty-three million, five hundred sixty-six thousand, six hundred thirteen".