643226024413 has 16 divisors (see below), whose sum is σ = 747789649920. Its totient is φ = 541836313200.

The previous prime is 643226024381. The next prime is 643226024437. The reversal of 643226024413 is 314420622346.

643226024413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 643226024413 - 2⁵ = 643226024381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643226024713) 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, 1228248 + ... + 1671838.

It is an arithmetic number, because the mean of its divisors is an integer number (46736853120).

Almost surely, 2^643226024413 is an apocalyptic number.

It is an amenable number.

643226024413 is a deficient number, since it is larger than the sum of its proper divisors (104563625507).

643226024413 is a wasteful number, since it uses less digits than its factorization.

643226024413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447168.

The product of its (nonzero) digits is 165888, while the sum is 37.

Adding to 643226024413 its reverse (314420622346), we get a palindrome (957646646759).

The spelling of 643226024413 in words is "six hundred forty-three billion, two hundred twenty-six million, twenty-four thousand, four hundred thirteen".