643210012346 has 48 divisors (see below), whose sum is σ = 1077328153440. Its totient is φ = 287736741600.

The previous prime is 643210012327. The next prime is 643210012349.

643210012346 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (643210012349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17963441 + ... + 17999211.

It is an arithmetic number, because the mean of its divisors is an integer number (22444336530).

Almost surely, 2^643210012346 is an apocalyptic number.

643210012346 is a deficient number, since it is larger than the sum of its proper divisors (434118141094).

643210012346 is a wasteful number, since it uses less digits than its factorization.

643210012346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36971 (or 36960 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

It can be divided in two parts, 6432100 and 12346, that added together give a palindrome (6444446).

The spelling of 643210012346 in words is "six hundred forty-three billion, two hundred ten million, twelve thousand, three hundred forty-six".