126688864434 has 32 divisors (see below), whose sum is σ = 277247197440. Its totient is φ = 38274574800.

The previous prime is 126688864427. The next prime is 126688864439. The reversal of 126688864434 is 434468886621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (126688864439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2877744 + ... + 2921435.

It is an arithmetic number, because the mean of its divisors is an integer number (8663974920).

Almost surely, 2^126688864434 is an apocalyptic number.

126688864434 is an abundant number, since it is smaller than the sum of its proper divisors (150558333006).

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

126688864434 is a wasteful number, since it uses less digits than its factorization.

126688864434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5799526.

The product of its digits is 42467328, while the sum is 60.

The spelling of 126688864434 in words is "one hundred twenty-six billion, six hundred eighty-eight million, eight hundred sixty-four thousand, four hundred thirty-four".