643264565462346 has 8 divisors (see below), whose sum is σ = 1286529130924704. Its totient is φ = 214421521820780.

The previous prime is 643264565462243. The next prime is 643264565462399.

It is a happy number.

643264565462346 is nontrivially palindromic in base 10.

643264565462346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

643264565462346 is an admirable number.

It is a super-3 number, since 3×643264565462346³ (a number of 45 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53605380455190 + ... + 53605380455201.

It is an arithmetic number, because the mean of its divisors is an integer number (160816141365588).

Almost surely, 2^{643264565462346} is an apocalyptic number.

643264565462346 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

643264565462346 is a wasteful number, since it uses less digits than its factorization.

643264565462346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107210760910396.

The product of its digits is 1791590400, while the sum is 66.

The spelling of 643264565462346 in words is "six hundred forty-three trillion, two hundred sixty-four billion, five hundred sixty-five million, four hundred sixty-two thousand, three hundred forty-six".