27271636641 has 24 divisors (see below), whose sum is σ = 39476526336. Its totient is φ = 18142300800.

The previous prime is 27271636607. The next prime is 27271636661. The reversal of 27271636641 is 14663617272.

27271636641 is a `hidden beast` number, since 2 + 7 + 2 + 7 + 1 + 636 + 6 + 4 + 1 = 666.

It is not a de Polignac number, because 27271636641 - 2⁶ = 27271636577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27271636661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13218376 + ... + 13220438.

It is an arithmetic number, because the mean of its divisors is an integer number (1644855264).

Almost surely, 2^27271636641 is an apocalyptic number.

It is an amenable number.

27271636641 is a deficient number, since it is larger than the sum of its proper divisors (12204889695).

27271636641 is a wasteful number, since it uses less digits than its factorization.

27271636641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493 (or 4490 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The spelling of 27271636641 in words is "twenty-seven billion, two hundred seventy-one million, six hundred thirty-six thousand, six hundred forty-one".