6344216387551 has 8 divisors (see below), whose sum is σ = 7282473690240. Its totient is φ = 5413944253848.

The previous prime is 6344216387497. The next prime is 6344216387569. The reversal of 6344216387551 is 1557836124436.

It is a happy number.

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 6344216387551 - 2⁷ = 6344216387423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6344216387492 and 6344216387501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6344216087551) 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, 1996290541 + ... + 1996293718.

It is an arithmetic number, because the mean of its divisors is an integer number (910309211280).

Almost surely, 2^{6344216387551} is an apocalyptic number.

6344216387551 is a deficient number, since it is larger than the sum of its proper divisors (938257302689).

6344216387551 is a wasteful number, since it uses less digits than its factorization.

6344216387551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992584493.

The product of its digits is 14515200, while the sum is 55.

The spelling of 6344216387551 in words is "six trillion, three hundred forty-four billion, two hundred sixteen million, three hundred eighty-seven thousand, five hundred fifty-one".