27481407291966 has 32 divisors (see below), whose sum is σ = 56241470026368. Its totient is φ = 8947363269600.

The previous prime is 27481407291959. The next prime is 27481407291983. The reversal of 27481407291966 is 66919270418472.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27481407291897 and 27481407291906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38839845 + ... + 39541071.

It is an arithmetic number, because the mean of its divisors is an integer number (1757545938324).

Almost surely, 2^{27481407291966} is an apocalyptic number.

27481407291966 is an abundant number, since it is smaller than the sum of its proper divisors (28760062734402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27481407291966 is a wasteful number, since it uses less digits than its factorization.

27481407291966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853176.

The product of its (nonzero) digits is 73156608, while the sum is 66.

The spelling of 27481407291966 in words is "twenty-seven trillion, four hundred eighty-one billion, four hundred seven million, two hundred ninety-one thousand, nine hundred sixty-six".