12726071652 has 36 divisors (see below), whose sum is σ = 34542196080. Its totient is φ = 3636020304.

The previous prime is 12726071651. The next prime is 12726071663. The reversal of 12726071652 is 25617062721.

It is a self number, because there is not a number n which added to its sum of digits gives 12726071652.

It is not an unprimeable number, because it can be changed into a prime (12726071651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10820902 + ... + 10822077.

Almost surely, 2^12726071652 is an apocalyptic number.

12726071652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12726071652 is an abundant number, since it is smaller than the sum of its proper divisors (21816124428).

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

12726071652 is a wasteful number, since it uses less digits than its factorization.

12726071652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21643000 (or 21642991 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 12726071652 in words is "twelve billion, seven hundred twenty-six million, seventy-one thousand, six hundred fifty-two".