27017825641 has 3 divisors (see below), whose sum is σ = 27017990013. Its totient is φ = 27017661270.

The previous prime is 27017825621. The next prime is 27017825663. The reversal of 27017825641 is 14652871072.

The square root of 27017825641 is 164371.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 27017825641 - 2⁹ = 27017825129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27017825621) 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 2 ways as a sum of consecutive naturals, for example, 82186 + ... + 246556.

It is an arithmetic number, because the mean of its divisors is an integer number (9005996671).

Almost surely, 2^27017825641 is an apocalyptic number.

27017825641 is the 164371-st square number.

27017825641 is the 82186-th centered octagonal number.

It is an amenable number.

27017825641 is a deficient number, since it is larger than the sum of its proper divisors (164372).

27017825641 is an frugal number, since it uses more digits than its factorization.

27017825641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328742 (or 164371 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 27017825641 in words is "twenty-seven billion, seventeen million, eight hundred twenty-five thousand, six hundred forty-one".