6281281881566 has 8 divisors (see below), whose sum is σ = 9831571640784. Its totient is φ = 3004091334640.

The previous prime is 6281281881529. The next prime is 6281281881643. The reversal of 6281281881566 is 6651881821826.

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

It is a super-2 number, since 2×6281281881566² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6281281881499 and 6281281881508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68274803015 + ... + 68274803106.

It is an arithmetic number, because the mean of its divisors is an integer number (1228946455098).

Almost surely, 2^{6281281881566} is an apocalyptic number.

6281281881566 is a deficient number, since it is larger than the sum of its proper divisors (3550289759218).

6281281881566 is a wasteful number, since it uses less digits than its factorization.

6281281881566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136549606146.

The product of its digits is 17694720, while the sum is 62.

The spelling of 6281281881566 in words is "six trillion, two hundred eighty-one billion, two hundred eighty-one million, eight hundred eighty-one thousand, five hundred sixty-six".