12578811342244 has 81 divisors (see below), whose sum is σ = 26039802468771. Its totient is φ = 5301266624640.

The previous prime is 12578811342239. The next prime is 12578811342247. The reversal of 12578811342244 is 44224311887521.

The square root of 12578811342244 is 3546662.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11542666502500 + 1036144839744 = 3397450^2 + 1017912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12578811342191 and 12578811342200.

It is not an unprimeable number, because it can be changed into a prime (12578811342247) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3028847272 + ... + 3028851424.

Almost surely, 2^{12578811342244} is an apocalyptic number.

12578811342244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12578811342244 is the 3546662-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12578811342244

12578811342244 is an abundant number, since it is smaller than the sum of its proper divisors (13460991126527).

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

12578811342244 is an frugal number, since it uses more digits than its factorization.

12578811342244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8446 (or 4223 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 52.

The spelling of 12578811342244 in words is "twelve trillion, five hundred seventy-eight billion, eight hundred eleven million, three hundred forty-two thousand, two hundred forty-four".