27140136641 has 4 divisors (see below), whose sum is σ = 27225752532. Its totient is φ = 27054520752.

The previous prime is 27140136637. The next prime is 27140136677. The reversal of 27140136641 is 14663104172.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13450200625 + 13689936016 = 115975^2 + 117004^2 .

It is a cyclic number.

It is not a de Polignac number, because 27140136641 - 2² = 27140136637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27140139641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42807470 + ... + 42808103.

It is an arithmetic number, because the mean of its divisors is an integer number (6806438133).

Almost surely, 2^27140136641 is an apocalyptic number.

It is an amenable number.

27140136641 is a deficient number, since it is larger than the sum of its proper divisors (85615891).

27140136641 is an equidigital number, since it uses as much as digits as its factorization.

27140136641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85615890.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 27140136641 in words is "twenty-seven billion, one hundred forty million, one hundred thirty-six thousand, six hundred forty-one".