643104222401346 has 16 divisors (see below), whose sum is σ = 1287048554843808. Its totient is φ = 214228055793600.

The previous prime is 643104222401339. The next prime is 643104222401351.

643104222401346 is nontrivially palindromic in base 10.

643104222401346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×643104222401346² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 643104222401298 and 643104222401307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35004575095 + ... + 35004593466.

It is an arithmetic number, because the mean of its divisors is an integer number (80440534677738).

Almost surely, 2^{643104222401346} is an apocalyptic number.

643104222401346 is an abundant number, since it is smaller than the sum of its proper divisors (643944332442462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643104222401346 is a wasteful number, since it uses less digits than its factorization.

643104222401346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70009170097.

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 643104222401346 in words is "six hundred forty-three trillion, one hundred four billion, two hundred twenty-two million, four hundred one thousand, three hundred forty-six".