27532653409 has 4 divisors (see below), whose sum is σ = 27599970820. Its totient is φ = 27465336000.

The previous prime is 27532653329. The next prime is 27532653419. The reversal of 27532653409 is 90435623572.

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 23142928384 + 4389725025 = 152128^2 + 66255^2 .

It is a cyclic number.

It is not a de Polignac number, because 27532653409 - 2⁹ = 27532652897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27532653419) 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 3 ways as a sum of consecutive naturals, for example, 33658092 + ... + 33658909.

It is an arithmetic number, because the mean of its divisors is an integer number (6899992705).

Almost surely, 2^27532653409 is an apocalyptic number.

It is an amenable number.

27532653409 is a deficient number, since it is larger than the sum of its proper divisors (67317411).

27532653409 is an equidigital number, since it uses as much as digits as its factorization.

27532653409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67317410.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 27532653409 in words is "twenty-seven billion, five hundred thirty-two million, six hundred fifty-three thousand, four hundred nine".