126643342606 has 16 divisors (see below), whose sum is σ = 214380581040. Its totient is φ = 55580150080.

The previous prime is 126643342523. The next prime is 126643342607. The reversal of 126643342606 is 606243346621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126643342607) by changing a digit.

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, 99249631 + ... + 99250906.

It is an arithmetic number, because the mean of its divisors is an integer number (13398786315).

Almost surely, 2^126643342606 is an apocalyptic number.

126643342606 is a deficient number, since it is larger than the sum of its proper divisors (87737238434).

126643342606 is a wasteful number, since it uses less digits than its factorization.

126643342606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198500579.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 126643342606 in words is "one hundred twenty-six billion, six hundred forty-three million, three hundred forty-two thousand, six hundred six".