27256046666 has 24 divisors (see below), whose sum is σ = 42290587020. Its totient is φ = 13173477120.

The previous prime is 27256046663. The next prime is 27256046683. The reversal of 27256046666 is 66664065272.

It can be written as a sum of positive squares in 6 ways, for example, as 2989441 + 27253057225 = 1729^2 + 165085^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27256046663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 329270 + ... + 403646.

Almost surely, 2^27256046666 is an apocalyptic number.

27256046666 is a deficient number, since it is larger than the sum of its proper divisors (15034540354).

27256046666 is a wasteful number, since it uses less digits than its factorization.

27256046666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74570 (or 74529 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 27256046666 in words is "twenty-seven billion, two hundred fifty-six million, forty-six thousand, six hundred sixty-six".