27660401866 has 8 divisors (see below), whose sum is σ = 41491848384. Its totient is φ = 13829785740.

The previous prime is 27660401831. The next prime is 27660401891. The reversal of 27660401866 is 66810406672.

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

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, 116290 + ... + 262381.

It is an arithmetic number, because the mean of its divisors is an integer number (5186481048).

Almost surely, 2^27660401866 is an apocalyptic number.

27660401866 is a deficient number, since it is larger than the sum of its proper divisors (13831446518).

27660401866 is a wasteful number, since it uses less digits than its factorization.

27660401866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415196.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 27660401866 in words is "twenty-seven billion, six hundred sixty million, four hundred one thousand, eight hundred sixty-six".