12271578592 has 96 divisors (see below), whose sum is σ = 29765256192. Its totient is φ = 4849749504.

The previous prime is 12271578589. The next prime is 12271578601. The reversal of 12271578592 is 29587517221.

It is a super-2 number, since 2×12271578592² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4433593 + ... + 4436359.

It is an arithmetic number, because the mean of its divisors is an integer number (310054752).

Almost surely, 2^12271578592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12271578592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14882628096).

12271578592 is an abundant number, since it is smaller than the sum of its proper divisors (17493677600).

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

12271578592 is a wasteful number, since it uses less digits than its factorization.

12271578592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320 (or 4312 counting only the distinct ones).

The product of its digits is 705600, while the sum is 49.

The spelling of 12271578592 in words is "twelve billion, two hundred seventy-one million, five hundred seventy-eight thousand, five hundred ninety-two".