644000424141 has 8 divisors (see below), whose sum is σ = 858672192384. Its totient is φ = 429331136000.

The previous prime is 644000424103. The next prime is 644000424149. The reversal of 644000424141 is 141424000446.

644000424141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 644000424141 - 2³⁰ = 642926682317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 644000424099 and 644000424108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (644000424149) 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, 107980 + ... + 1140026.

It is an arithmetic number, because the mean of its divisors is an integer number (107334024048).

Almost surely, 2^644000424141 is an apocalyptic number.

It is an amenable number.

644000424141 is a deficient number, since it is larger than the sum of its proper divisors (214671768243).

644000424141 is a wasteful number, since it uses less digits than its factorization.

644000424141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240051.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 644000424141 its reverse (141424000446), we get a palindrome (785424424587).

The spelling of 644000424141 in words is "six hundred forty-four billion, four hundred twenty-four thousand, one hundred forty-one".