66027520033 has 4 divisors (see below), whose sum is σ = 66396389040. Its totient is φ = 65658651028.

The previous prime is 66027520001. The next prime is 66027520087. The reversal of 66027520033 is 33002572066.

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: 33002572066 = 2 ⋅16501286033.

It is a cyclic number.

It is not a de Polignac number, because 66027520033 - 2⁵ = 66027520001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66027520333) 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, 184434235 + ... + 184434592.

It is an arithmetic number, because the mean of its divisors is an integer number (16599097260).

Almost surely, 2^66027520033 is an apocalyptic number.

It is an amenable number.

66027520033 is a deficient number, since it is larger than the sum of its proper divisors (368869007).

66027520033 is a wasteful number, since it uses less digits than its factorization.

66027520033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368869006.

The product of its (nonzero) digits is 45360, while the sum is 34.

The spelling of 66027520033 in words is "sixty-six billion, twenty-seven million, five hundred twenty thousand, thirty-three".