126651535236 has 144 divisors (see below), whose sum is σ = 347029038720. Its totient is φ = 38799682560.

The previous prime is 126651535181. The next prime is 126651535237. The reversal of 126651535236 is 632535156621.

126651535236 is a `hidden beast` number, since 1 + 2 + 66 + 51 + 535 + 2 + 3 + 6 = 666.

It is a super-2 number, since 2×126651535236² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126651535191 and 126651535200.

It is not an unprimeable number, because it can be changed into a prime (126651535237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5176945 + ... + 5201351.

It is an arithmetic number, because the mean of its divisors is an integer number (2409923880).

Almost surely, 2^126651535236 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 126651535236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173514519360).

126651535236 is an abundant number, since it is smaller than the sum of its proper divisors (220377503484).

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

126651535236 is a wasteful number, since it uses less digits than its factorization.

126651535236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24634 (or 24629 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The spelling of 126651535236 in words is "one hundred twenty-six billion, six hundred fifty-one million, five hundred thirty-five thousand, two hundred thirty-six".