12755726538256 has 45 divisors (see below), whose sum is σ = 26761941660429. Its totient is φ = 5887172685888.

The previous prime is 12755726538239. The next prime is 12755726538307. The reversal of 12755726538256 is 65283562755721.

It is a happy number.

The square root of 12755726538256 is 3571516.

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

It can be written as a sum of positive squares in only one way, i.e., 1886941795600 + 10868784742656 = 1373660^2 + 3296784^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 185684491 + ... + 185753173.

Almost surely, 2^{12755726538256} is an apocalyptic number.

12755726538256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12755726538256 is the 3571516-th square number.

It is an amenable number.

12755726538256 is an abundant number, since it is smaller than the sum of its proper divisors (14006215122173).

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

12755726538256 is an frugal number, since it uses more digits than its factorization.

12755726538256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137400 (or 68698 counting only the distinct ones).

The product of its digits is 211680000, while the sum is 64.

Multiplying 12755726538256 by its sum of digits (64), we get a square (816366498448384 = 28572128²).

The spelling of 12755726538256 in words is "twelve trillion, seven hundred fifty-five billion, seven hundred twenty-six million, five hundred thirty-eight thousand, two hundred fifty-six".