643434484434346 has 64 divisors (see below), whose sum is σ = 1072151255036160. Its totient is φ = 289562042088000.

The previous prime is 643434484434337. The next prime is 643434484434361.

643434484434346 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9592156035 + ... + 9592223113.

It is an arithmetic number, because the mean of its divisors is an integer number (16752363359940).

Almost surely, 2^{643434484434346} is an apocalyptic number.

643434484434346 is a deficient number, since it is larger than the sum of its proper divisors (428716770601814).

643434484434346 is a wasteful number, since it uses less digits than its factorization.

643434484434346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102892 (or 102870 counting only the distinct ones).

The product of its digits is 1528823808, while the sum is 64.

The spelling of 643434484434346 in words is "six hundred forty-three trillion, four hundred thirty-four billion, four hundred eighty-four million, four hundred thirty-four thousand, three hundred forty-six".