6181861803459 has 8 divisors (see below), whose sum is σ = 8277857866512. Its totient is φ = 4103553471360.

The previous prime is 6181861803449. The next prime is 6181861803461. The reversal of 6181861803459 is 9543081681816.

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

It is not a de Polignac number, because 6181861803459 - 2¹¹ = 6181861801411 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6181861803449) 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, 4421931922 + ... + 4421933319.

It is an arithmetic number, because the mean of its divisors is an integer number (1034732233314).

Almost surely, 2^{6181861803459} is an apocalyptic number.

6181861803459 is a deficient number, since it is larger than the sum of its proper divisors (2095996063053).

6181861803459 is a wasteful number, since it uses less digits than its factorization.

6181861803459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8843865477.

The product of its (nonzero) digits is 9953280, while the sum is 60.

The spelling of 6181861803459 in words is "six trillion, one hundred eighty-one billion, eight hundred sixty-one million, eight hundred three thousand, four hundred fifty-nine".