645333204241333 has 8 divisors (see below), whose sum is σ = 646151593291776. Its totient is φ = 644514978642000.

The previous prime is 645333204241307. The next prime is 645333204241339. The reversal of 645333204241333 is 333142402333546.

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 645333204241333 - 2⁴¹ = 643134180985781 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 (645333204241339) 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, 32960458 + ... + 48755083.

It is an arithmetic number, because the mean of its divisors is an integer number (80768949161472).

Almost surely, 2^{645333204241333} is an apocalyptic number.

It is an amenable number.

645333204241333 is a deficient number, since it is larger than the sum of its proper divisors (818389050443).

645333204241333 is an equidigital number, since it uses as much as digits as its factorization.

645333204241333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81725555.

The product of its (nonzero) digits is 5598720, while the sum is 46.

Adding to 645333204241333 its reverse (333142402333546), we get a palindrome (978475606574879).

The spelling of 645333204241333 in words is "six hundred forty-five trillion, three hundred thirty-three billion, two hundred four million, two hundred forty-one thousand, three hundred thirty-three".