27561061073 has 8 divisors (see below), whose sum is σ = 33921306048. Its totient is φ = 21806553744.

The previous prime is 27561061063. The next prime is 27561061081. The reversal of 27561061073 is 37016016572.

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 27561061073 - 2⁴ = 27561061057 is a prime.

It is a super-2 number, since 2×27561061073² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27561061063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151434311 + ... + 151434492.

It is an arithmetic number, because the mean of its divisors is an integer number (4240163256).

Almost surely, 2^27561061073 is an apocalyptic number.

It is an amenable number.

27561061073 is a deficient number, since it is larger than the sum of its proper divisors (6360244975).

27561061073 is a wasteful number, since it uses less digits than its factorization.

27561061073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302868823.

The product of its (nonzero) digits is 52920, while the sum is 38.

The spelling of 27561061073 in words is "twenty-seven billion, five hundred sixty-one million, sixty-one thousand, seventy-three".