27033607561 has 3 divisors (see below), whose sum is σ = 27033771981. Its totient is φ = 27033443142.

The previous prime is 27033607481. The next prime is 27033607571. The reversal of 27033607561 is 16570633072.

The square root of 27033607561 is 164419.

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 a de Polignac number, because none of the positive numbers 2^k-27033607561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27033607571) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 82210 + ... + 246628.

It is an arithmetic number, because the mean of its divisors is an integer number (9011257327).

Almost surely, 2^27033607561 is an apocalyptic number.

27033607561 is the 164419-th square number.

27033607561 is the 82210-th centered octagonal number.

It is an amenable number.

27033607561 is a deficient number, since it is larger than the sum of its proper divisors (164420).

27033607561 is an frugal number, since it uses more digits than its factorization.

27033607561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328838 (or 164419 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 40.

The spelling of 27033607561 in words is "twenty-seven billion, thirty-three million, six hundred seven thousand, five hundred sixty-one".