27765065329 has 4 divisors (see below), whose sum is σ = 29398304484. Its totient is φ = 26131826176.

The previous prime is 27765065303. The next prime is 27765065333. The reversal of 27765065329 is 92356056772.

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 14199105600 + 13565959729 = 119160^2 + 116473^2 .

It is a cyclic number.

It is not a de Polignac number, because 27765065329 - 2¹⁹ = 27764541041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27765065929) 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, 816619552 + ... + 816619585.

It is an arithmetic number, because the mean of its divisors is an integer number (7349576121).

Almost surely, 2^27765065329 is an apocalyptic number.

It is an amenable number.

27765065329 is a deficient number, since it is larger than the sum of its proper divisors (1633239155).

27765065329 is a wasteful number, since it uses less digits than its factorization.

27765065329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633239154.

The product of its (nonzero) digits is 4762800, while the sum is 52.

The spelling of 27765065329 in words is "twenty-seven billion, seven hundred sixty-five million, sixty-five thousand, three hundred twenty-nine".