27163147720 has 64 divisors (see below), whose sum is σ = 61992241920. Its totient is φ = 10710265344.

The previous prime is 27163147717. The next prime is 27163147771. The reversal of 27163147720 is 2774136172.

It is a Harshad number since it is a multiple of its sum of digits (40).

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 15 ways as a sum of consecutive naturals, for example, 1508289 + ... + 1526191.

It is an arithmetic number, because the mean of its divisors is an integer number (968628780).

Almost surely, 2^27163147720 is an apocalyptic number.

27163147720 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 27163147720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30996120960).

27163147720 is an abundant number, since it is smaller than the sum of its proper divisors (34829094200).

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

27163147720 is a wasteful number, since it uses less digits than its factorization.

27163147720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18454 (or 18450 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 27163147720 in words is "twenty-seven billion, one hundred sixty-three million, one hundred forty-seven thousand, seven hundred twenty".