1664216536133 has 8 divisors (see below), whose sum is σ = 1776480217920. Its totient is φ = 1554420188160.

The previous prime is 1664216536111. The next prime is 1664216536187. The reversal of 1664216536133 is 3316356124661.

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 1664216536133 - 2¹⁰ = 1664216535109 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 (1664216532133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 616832060 + ... + 616834757.

It is an arithmetic number, because the mean of its divisors is an integer number (222060027240).

Almost surely, 2^{1664216536133} is an apocalyptic number.

It is an amenable number.

1664216536133 is a deficient number, since it is larger than the sum of its proper divisors (112263681787).

1664216536133 is a wasteful number, since it uses less digits than its factorization.

1664216536133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233666907.

The product of its digits is 1399680, while the sum is 47.

The spelling of 1664216536133 in words is "one trillion, six hundred sixty-four billion, two hundred sixteen million, five hundred thirty-six thousand, one hundred thirty-three".