643301634103 has 8 divisors (see below), whose sum is σ = 643747477968. Its totient is φ = 642855949824.

The previous prime is 643301634097. The next prime is 643301634121. The reversal of 643301634103 is 301436103346.

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 643301634103 - 2⁵ = 643301634071 is a prime.

It is a super-2 number, since 2×643301634103² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643301634133) 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, 8670801 + ... + 8744677.

It is an arithmetic number, because the mean of its divisors is an integer number (80468434746).

Almost surely, 2^643301634103 is an apocalyptic number.

643301634103 is a deficient number, since it is larger than the sum of its proper divisors (445843865).

643301634103 is a wasteful number, since it uses less digits than its factorization.

643301634103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79793.

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 643301634103 its reverse (301436103346), we get a palindrome (944737737449).

The spelling of 643301634103 in words is "six hundred forty-three billion, three hundred one million, six hundred thirty-four thousand, one hundred three".