27396539361 has 45 divisors (see below), whose sum is σ = 41833002211. Its totient is φ = 17868107088.

The previous prime is 27396539293. The next prime is 27396539369. The reversal of 27396539361 is 16393569372.

The square root of 27396539361 is 165519.

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

27396539361 is a `hidden beast` number, since 2 + 73 + 9 + 6 + 539 + 36 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19750086225 + 7646453136 = 140535^2 + 87444^2 .

It is a de Polignac number, because none of the positive numbers 2^k-27396539361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27396539298 and 27396539307.

It is not an unprimeable number, because it can be changed into a prime (27396539369) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 78952390 + ... + 78952736.

Almost surely, 2^27396539361 is an apocalyptic number.

27396539361 is the 165519-th square number.

27396539361 is the 82760-th centered octagonal number.

It is an amenable number.

27396539361 is a deficient number, since it is larger than the sum of its proper divisors (14436462850).

27396539361 is an frugal number, since it uses more digits than its factorization.

27396539361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 403 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 54.

The spelling of 27396539361 in words is "twenty-seven billion, three hundred ninety-six million, five hundred thirty-nine thousand, three hundred sixty-one".