646221235013133 has 8 divisors (see below), whose sum is σ = 927907414377888. Its totient is φ = 397674606161904.

The previous prime is 646221235013113. The next prime is 646221235013177. The reversal of 646221235013133 is 331310532122646.

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

It is not a de Polignac number, because 646221235013133 - 2²⁶ = 646221167904269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646221235013113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8284887628335 + ... + 8284887628412.

It is an arithmetic number, because the mean of its divisors is an integer number (115988426797236).

Almost surely, 2^{646221235013133} is an apocalyptic number.

It is an amenable number.

646221235013133 is a deficient number, since it is larger than the sum of its proper divisors (281686179364755).

646221235013133 is a wasteful number, since it uses less digits than its factorization.

646221235013133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16569775256763.

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 646221235013133 its reverse (331310532122646), we get a palindrome (977531767135779).

The spelling of 646221235013133 in words is "six hundred forty-six trillion, two hundred twenty-one billion, two hundred thirty-five million, thirteen thousand, one hundred thirty-three".