27609767455061 has 4 divisors (see below), whose sum is σ = 30119746314624. Its totient is φ = 25099788595500.

The previous prime is 27609767455007. The next prime is 27609767455063. The reversal of 27609767455061 is 16055476790672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27609767455061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27609767455063) 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, 1254989429765 + ... + 1254989429786.

It is an arithmetic number, because the mean of its divisors is an integer number (7529936578656).

Almost surely, 2^{27609767455061} is an apocalyptic number.

It is an amenable number.

27609767455061 is a deficient number, since it is larger than the sum of its proper divisors (2509978859563).

27609767455061 is a wasteful number, since it uses less digits than its factorization.

27609767455061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509978859562.

The product of its (nonzero) digits is 133358400, while the sum is 65.

The spelling of 27609767455061 in words is "twenty-seven trillion, six hundred nine billion, seven hundred sixty-seven million, four hundred fifty-five thousand, sixty-one".