66411334533 has 8 divisors (see below), whose sum is σ = 88599548448. Its totient is φ = 44248671824.

The previous prime is 66411334523. The next prime is 66411334553. The reversal of 66411334533 is 33543311466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66411334533 - 2²⁰ = 66410285957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66411334491 and 66411334500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66411334523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6381735 + ... + 6392132.

It is an arithmetic number, because the mean of its divisors is an integer number (11074943556).

Almost surely, 2^66411334533 is an apocalyptic number.

It is an amenable number.

66411334533 is a deficient number, since it is larger than the sum of its proper divisors (22188213915).

66411334533 is a wasteful number, since it uses less digits than its factorization.

66411334533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12775603.

The product of its digits is 233280, while the sum is 39.

Adding to 66411334533 its reverse (33543311466), we get a palindrome (99954645999).

The spelling of 66411334533 in words is "sixty-six billion, four hundred eleven million, three hundred thirty-four thousand, five hundred thirty-three".