126536597728 has 48 divisors (see below), whose sum is σ = 254235433536. Its totient is φ = 61972784640.

The previous prime is 126536597717. The next prime is 126536597731. The reversal of 126536597728 is 827795635621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978793 + ... + 1100503.

It is an arithmetic number, because the mean of its divisors is an integer number (5296571532).

Almost surely, 2^126536597728 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 126536597728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127117716768).

126536597728 is an abundant number, since it is smaller than the sum of its proper divisors (127698835808).

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

126536597728 is a wasteful number, since it uses less digits than its factorization.

126536597728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122387 (or 122379 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 61.

The spelling of 126536597728 in words is "one hundred twenty-six billion, five hundred thirty-six million, five hundred ninety-seven thousand, seven hundred twenty-eight".