643141141346 has 16 divisors (see below), whose sum is σ = 1053159749280. Its totient is φ = 292129390080.

The previous prime is 643141141343. The next prime is 643141141369.

643141141346 is nontrivially palindromic in base 10.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (643141141343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10342916 + ... + 10404911.

It is an arithmetic number, because the mean of its divisors is an integer number (65822484330).

Almost surely, 2^643141141346 is an apocalyptic number.

643141141346 is a deficient number, since it is larger than the sum of its proper divisors (410018607934).

643141141346 is a wasteful number, since it uses less digits than its factorization.

643141141346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20749249.

The product of its digits is 82944, while the sum is 38.

It can be divided in two parts, 643141 and 141346, that added together give a palindrome (784487).

The spelling of 643141141346 in words is "six hundred forty-three billion, one hundred forty-one million, one hundred forty-one thousand, three hundred forty-six".