27212347663 has 4 divisors (see below), whose sum is σ = 27556807840. Its totient is φ = 26867887488.

The previous prime is 27212347639. The next prime is 27212347667. The reversal of 27212347663 is 36674321272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27212347663 - 2²¹ = 27210250511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27212347667) 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, 172229970 + ... + 172230127.

It is an arithmetic number, because the mean of its divisors is an integer number (6889201960).

Almost surely, 2^27212347663 is an apocalyptic number.

27212347663 is a deficient number, since it is larger than the sum of its proper divisors (344460177).

27212347663 is an equidigital number, since it uses as much as digits as its factorization.

27212347663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344460176.

The product of its digits is 508032, while the sum is 43.

The spelling of 27212347663 in words is "twenty-seven billion, two hundred twelve million, three hundred forty-seven thousand, six hundred sixty-three".