27642653065 has 8 divisors (see below), whose sum is σ = 33177339720. Its totient is φ = 22110018432.

The previous prime is 27642653039. The next prime is 27642653069. The reversal of 27642653065 is 56035624672.

It can be written as a sum of positive squares in 4 ways, for example, as 257698809 + 27384954256 = 16053^2 + 165484^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27642653065 - 2⁵ = 27642653033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27642653069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483210 + ... + 537379.

It is an arithmetic number, because the mean of its divisors is an integer number (4147167465).

Almost surely, 2^27642653065 is an apocalyptic number.

It is an amenable number.

27642653065 is a deficient number, since it is larger than the sum of its proper divisors (5534686655).

27642653065 is a wasteful number, since it uses less digits than its factorization.

27642653065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026011.

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 27642653065 in words is "twenty-seven billion, six hundred forty-two million, six hundred fifty-three thousand, sixty-five".