12726547956 has 120 divisors (see below), whose sum is σ = 36758715840. Its totient is φ = 3819011328.

The previous prime is 12726547943. The next prime is 12726547987. The reversal of 12726547956 is 65974562721.

It is a happy number.

12726547956 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 6 + 547 + 95 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 76455 + ... + 176913.

It is an arithmetic number, because the mean of its divisors is an integer number (306322632).

Almost surely, 2^12726547956 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 12726547956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18379357920).

12726547956 is an abundant number, since it is smaller than the sum of its proper divisors (24032167884).

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

12726547956 is a wasteful number, since it uses less digits than its factorization.

12726547956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100515 (or 100504 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 12726547956 in words is "twelve billion, seven hundred twenty-six million, five hundred forty-seven thousand, nine hundred fifty-six".