27101317220 has 96 divisors (see below), whose sum is σ = 61525336320. Its totient is φ = 9996940800.

The previous prime is 27101317141. The next prime is 27101317241. The reversal of 27101317220 is 2271310172.

It is a self number, because there is not a number n which added to its sum of digits gives 27101317220.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 14019374 + ... + 14021306.

It is an arithmetic number, because the mean of its divisors is an integer number (640888920).

Almost surely, 2^27101317220 is an apocalyptic number.

27101317220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27101317220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30762668160).

27101317220 is an abundant number, since it is smaller than the sum of its proper divisors (34424019100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27101317220 is a wasteful number, since it uses less digits than its factorization.

27101317220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045 (or 3043 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

Adding to 27101317220 its reverse (2271310172), we get a palindrome (29372627392).

The spelling of 27101317220 in words is "twenty-seven billion, one hundred one million, three hundred seventeen thousand, two hundred twenty".