6861344559 has 16 divisors (see below), whose sum is σ = 9236008800. Its totient is φ = 4530606080.

The previous prime is 6861344489. The next prime is 6861344563. The reversal of 6861344559 is 9554431686.

It is a cyclic number.

It is not a de Polignac number, because 6861344559 - 2¹³ = 6861336367 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6861344159) 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, 165949 + ... + 203129.

It is an arithmetic number, because the mean of its divisors is an integer number (577250550).

Almost surely, 2^6861344559 is an apocalyptic number.

6861344559 is a deficient number, since it is larger than the sum of its proper divisors (2374664241).

6861344559 is a wasteful number, since it uses less digits than its factorization.

6861344559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37770.

The product of its digits is 3110400, while the sum is 51.

The square root of 6861344559 is about 82833.2334211336. The cubic root of 6861344559 is about 1900.2164627802.

The spelling of 6861344559 in words is "six billion, eight hundred sixty-one million, three hundred forty-four thousand, five hundred fifty-nine".