126872557728 has 144 divisors (see below), whose sum is σ = 387598405824. Its totient is φ = 36232089600.

The previous prime is 126872557723. The next prime is 126872557811. The reversal of 126872557728 is 827755278621.

It is not an unprimeable number, because it can be changed into a prime (126872557723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12493453 + ... + 12503603.

It is an arithmetic number, because the mean of its divisors is an integer number (2691655596).

Almost surely, 2^126872557728 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 126872557728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193799202912).

126872557728 is an abundant number, since it is smaller than the sum of its proper divisors (260725848096).

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

126872557728 is a wasteful number, since it uses less digits than its factorization.

126872557728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12835 (or 12820 counting only the distinct ones).

The product of its digits is 26342400, while the sum is 60.

The spelling of 126872557728 in words is "one hundred twenty-six billion, eight hundred seventy-two million, five hundred fifty-seven thousand, seven hundred twenty-eight".