646333545333646 has 16 divisors (see below), whose sum is σ = 984529864327680. Its totient is φ = 318162408129720.

The previous prime is 646333545333643. The next prime is 646333545333683.

646333545333646 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646333545333643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370823040 + ... + 1371294451.

It is an arithmetic number, because the mean of its divisors is an integer number (61533116520480).

Almost surely, 2^{646333545333646} is an apocalyptic number.

646333545333646 is a deficient number, since it is larger than the sum of its proper divisors (338196318994034).

646333545333646 is a wasteful number, since it uses less digits than its factorization.

646333545333646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742119319.

The product of its digits is 1511654400, while the sum is 64.

The spelling of 646333545333646 in words is "six hundred forty-six trillion, three hundred thirty-three billion, five hundred forty-five million, three hundred thirty-three thousand, six hundred forty-six".