12726271064 has 64 divisors (see below), whose sum is σ = 26503239840. Its totient is φ = 5690787840.

The previous prime is 12726271021. The next prime is 12726271067. The reversal of 12726271064 is 46017262721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12726271067) by changing a digit.

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, 920507 + ... + 934229.

Almost surely, 2^12726271064 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 12726271064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13251619920).

12726271064 is an abundant number, since it is smaller than the sum of its proper divisors (13776968776).

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

12726271064 is a wasteful number, since it uses less digits than its factorization.

12726271064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14020 (or 14016 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 12726271064 in words is "twelve billion, seven hundred twenty-six million, two hundred seventy-one thousand, sixty-four".