27815666241 has 8 divisors (see below), whose sum is σ = 40459150944. Its totient is φ = 16857979520.

The previous prime is 27815666233. The next prime is 27815666257. The reversal of 27815666241 is 14266651872.

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

It is a cyclic number.

It is not a de Polignac number, because 27815666241 - 2³ = 27815666233 is a prime.

It is a super-2 number, since 2×27815666241² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27815666261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421449456 + ... + 421449521.

It is an arithmetic number, because the mean of its divisors is an integer number (5057393868).

Almost surely, 2^27815666241 is an apocalyptic number.

It is an amenable number.

27815666241 is a deficient number, since it is larger than the sum of its proper divisors (12643484703).

27815666241 is a wasteful number, since it uses less digits than its factorization.

27815666241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842898991.

The product of its digits is 967680, while the sum is 48.

The spelling of 27815666241 in words is "twenty-seven billion, eight hundred fifteen million, six hundred sixty-six thousand, two hundred forty-one".