126784322568 has 108 divisors (see below), whose sum is σ = 355868925165. Its totient is φ = 40775950656.

The previous prime is 126784322563. The next prime is 126784322647. The reversal of 126784322568 is 865223487621.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

126784322568 is a `hidden beast` number, since 1 + 2 + 6 + 78 + 4 + 3 + 2 + 2 + 568 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 126708945444 + 75377124 = 355962^2 + 8682^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=251778.

It is a super-2 number, since 2×126784322568² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126784322563) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 87618021 + ... + 87619467.

Almost surely, 2^126784322568 is an apocalyptic number.

126784322568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126784322568

126784322568 is an abundant number, since it is smaller than the sum of its proper divisors (229084602597).

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

126784322568 is an equidigital number, since it uses as much as digits as its factorization.

126784322568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964 (or 1481 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 126784322568 in words is "one hundred twenty-six billion, seven hundred eighty-four million, three hundred twenty-two thousand, five hundred sixty-eight".