27636530421 has 8 divisors (see below), whose sum is σ = 37315146880. Its totient is φ = 18191133792.

The previous prime is 27636530419. The next prime is 27636530423. The reversal of 27636530421 is 12403563672.

It is an interprime number because it is at equal distance from previous prime (27636530419) and next prime (27636530423).

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

It is not a de Polignac number, because 27636530421 - 2¹ = 27636530419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27636530421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27636530423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58304680 + ... + 58305153.

It is an arithmetic number, because the mean of its divisors is an integer number (4664393360).

Almost surely, 2^27636530421 is an apocalyptic number.

It is an amenable number.

27636530421 is a deficient number, since it is larger than the sum of its proper divisors (9678616459).

27636530421 is a wasteful number, since it uses less digits than its factorization.

27636530421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116609915.

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 27636530421 in words is "twenty-seven billion, six hundred thirty-six million, five hundred thirty thousand, four hundred twenty-one".