643332636364414 has 32 divisors (see below), whose sum is σ = 1031604240601440. Its totient is φ = 300348233808000.

The previous prime is 643332636364381. The next prime is 643332636364417. The reversal of 643332636364414 is 414463636233346.

643332636364414 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643332636364417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276738897 + ... + 1277242684.

It is an arithmetic number, because the mean of its divisors is an integer number (32237632518795).

Almost surely, 2^{643332636364414} is an apocalyptic number.

643332636364414 is a deficient number, since it is larger than the sum of its proper divisors (388271604237026).

643332636364414 is a wasteful number, since it uses less digits than its factorization.

643332636364414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553981756.

The product of its digits is 161243136, while the sum is 58.

The spelling of 643332636364414 in words is "six hundred forty-three trillion, three hundred thirty-two billion, six hundred thirty-six million, three hundred sixty-four thousand, four hundred fourteen".